The ratio of the radii of two circles is 1 : 3. The ratio of their areas is [#1703]
| « | ! | ! | » |
Q1. The ratio of the radii of two circles is 1 : 3. The ratio of their areas is
Q1. The ratio of the radii of two circles is 1 : 3. The ratio of their areas is
(A) 1:6
(A) 1:6
(A) 1:6
(B) 2:9
(B) 2:9
(B) 2:9
(C) 1:9
(C) 1:9
(C) 1:9
(D) 6:9
(D) 6:9
(D) 6:9
Answer: (C) 1:9
Answer: (C) 1:9
Answer: (C) 1:9
Area = πr2
π12 : π32
= π1 : π9
= 1:9
Area = πr2 π12 : π32 = π1 : π9 = 1:9
Area = πr2 π12 : π32 = π1 : π9 = 1:9
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Related MCQ Quizzes
Q1. The conversion of in the fractional form is
Q1. The conversion of in the fractional form is
(A)
(A)
(A)
(B)
(B)
(B)
(C)
(C)
(C)
(D)
(D)
(D)
Answer: (C)
Answer: (C)
Answer: (C)
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q2. Find the value of
Q2. Find the value of
(A)
(A)
(A)
(B)
(B)
(B)
(C)
(C)
(C)
(D)
(D)
(D)
Answer: (D)
Answer: (D)
Answer: (D)
=
=
=
=
=
= = = = =
= = = = =
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q3. Two numbers are in the ratio 2 : 3 and the product of their HCF and LCM is 96. The sum of the two numbers is
Q3. Two numbers are in the ratio 2 : 3 and the product of their HCF and LCM is 96. The sum of the two numbers is
(A) 18
(A) 18
(A) 18
(B) 20
(B) 20
(B) 20
(C) 22
(C) 22
(C) 22
(D) 24
(D) 24
(D) 24
Answer: (B) 20
Answer: (B) 20
Answer: (B) 20
2:3 = 8:12
N1*N2 = HCF*LCM
8*12 = 96
N1+N2 = 8+12 = 20
2:3 = 8:12 N1*N2 = HCF*LCM 8*12 = 96 N1+N2 = 8+12 = 20
2:3 = 8:12 N1*N2 = HCF*LCM 8*12 = 96 N1+N2 = 8+12 = 20
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q4. At what percentage of simple interest does an amount of money double in 12 years?
Q4. At what percentage of simple interest does an amount of money double in 12 years?
(A)
(A)
(A)
(B)
(B)
(B)
(C)
(C)
(C)
(D)
(D)
(D)
Answer: (C)
Answer: (C)
Answer: (C)
P * * 12
= P * * 12
= P *
= P * 100%
P * * 12 = P * * 12 = P * = P * 100%
P * * 12 = P * * 12 = P * = P * 100%
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q5. Find the odd number - 15, 17, 6, 12.
Q5. Find the odd number - 15, 17, 6, 12.
(A) 6
(A) 6
(A) 6
(B) 12
(B) 12
(B) 12
(C) 15
(C) 15
(C) 15
(D) 17
(D) 17
(D) 17
Answer: (D) 17
Answer: (D) 17
Answer: (D) 17
17 which is a Prime number.
17 which is a Prime number.
17 which is a Prime number.
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q6. The difference of two numbers is 5 and the difference of their square is 135. Then the sum of the numbers is
Q6. The difference of two numbers is 5 and the difference of their square is 135. Then the sum of the numbers is
(A) 25
(A) 25
(A) 25
(B) 45
(B) 45
(B) 45
(C) 32
(C) 32
(C) 32
(D) 27
(D) 27
(D) 27
Answer: (D) 27
Answer: (D) 27
Answer: (D) 27
27
27
27
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q7. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :
Q7. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :
(A) 20%
(A) 20%
(A) 20%
(B) 40%
(B) 40%
(B) 40%
(C) 24%
(C) 24%
(C) 24%
(D) 28%
(D) 28%
(D) 28%
Answer: (D) 28%
Answer: (D) 28%
Answer: (D) 28%
Net change (-40 + 20 + )%
= (-20 + )%
= (-20 - 8)%
= -28%
= 28%
Net change (-40 + 20 + )% = (-20 + )% = (-20 - 8)% = -28% = 28%
Net change (-40 + 20 + )% = (-20 + )% = (-20 - 8)% = -28% = 28%
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q8. Three fourth of a number is more than two third of the number by 5. Then the number is
Q8. Three fourth of a number is more than two third of the number by 5. Then the number is
(A) 72
(A) 72
(A) 72
(B) 60
(B) 60
(B) 60
(C) 80
(C) 80
(C) 80
(D) 48
(D) 48
(D) 48
Answer: (B) 60
Answer: (B) 60
Answer: (B) 60
60
60
60
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q9. The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
Q9. The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
(A) 60
(A) 60
(A) 60
(B) 120
(B) 120
(B) 120
(C) 180
(C) 180
(C) 180
(D) 240
(D) 240
(D) 240
Answer: (B) 120
Answer: (B) 120
Answer: (B) 120
120
120
120
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Q10. When a number is divided by 893 the remainder is 193. If the same number is divided by 47, the remainder will be
Q10. When a number is divided by 893 the remainder is 193. If the same number is divided by 47, the remainder will be
(A) 3
(A) 3
(A) 3
(B) 25
(B) 25
(B) 25
(C) 5
(C) 5
(C) 5
(D) 33
(D) 33
(D) 33
Answer: (C) 5
Answer: (C) 5
Answer: (C) 5
5
5
5
*** Choose the correct option to show answer. (Choose the correct option to show answer.) Need help
Related Questions
1. If is equal to2. 3/4 of a number is 19 less than the original number. The number is3. If A : B = 3, then 144A : 36B is4. The smallest among is5. When the numerator of a fraction increases by 3, the fraction increases by its three-fourth. The numerator of the fraction is6. What is the term for the distance around a shape?7. A wheel can cover a distance of 22 km in 1000 rounds. The radius of the wheel is8. A 100 metre long train moving in a uniform speed of 20 m/sec crosses a bridge of length 1 km. The time taken by the train to cross the bridge is9. Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is10. Two trains of 200 m and 100 m long are running parallel at the rate of 20 m/sec. and 22 m/sec. respectively. How much time will they take to cross each other, if the trains are running along the same direction?11. 98 toffees were distributed to some boys in a group. Each boy in the group got twice as many of the toffees as the number of boys. The number of boys in the group was12. The missing term in the sequence 7, 11, 19, 31, ______, 67 is13. 45% of a number is same as 30% of another number. The ratio of the first number to the second number is :14. What is the term for a number that has no decimal places or fractional part?15. The least number by which 2450 must be multiplied to make it a perfect square, is16. The difference between the smallest 3-digit even natural number and the largest 2-digit even natural number is17. p, q, r are three numbers such that the LCM of p and q is q and the LCM of q and r is r. The LCM of p, q and r will be18. The smallest positive integer that is simultaneously divisible by 6, 8 and 12 is19. The sum of two numbers is 15 and the sum of their squares is 113. The numbers are20. 5 : 27 :: 9 : ________