What is the formula to calculate the area of a circle? [#1257]

The formula to calculate the area of a circle is A = πr², where A is the area and r is the radius of the circle.

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The formula to calculate the area of a circle is A = πr², where A is the area and r is the radius of the circle.

Biswa Singha (1515–1540) is considered the founder of the Koch dynasty, which ruled parts of present-day Assam and Bengal in the 16th century. He unified various Bodo tribes, replaced the Baro-Bhuyans, and established the dynasty in the erstwhile Kamata Kingdom. His son, Naranarayan, is considered the dynasty's greatest monarch, extending his power over a large part of Assam and southward into what became the British district of Rangpur.

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Biswa Singha (1515–1540) is considered the founder of the Koch dynasty, which ruled parts of present-day Assam and Bengal in the 16th century. He unified various Bodo tribes, replaced the Baro-Bhuyans, and established the dynasty in the erstwhile Kamata Kingdom. His son, Naranarayan, is considered the dynasty's greatest monarch, extending his power over a large part of Assam and southward into what became the British district of Rangpur.

Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

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Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, Earth's shape is an idealized spheroid – a squashed sphere – with a surface area of about 510 million square km (197 million sq mi).

The Karla Caves, also known as Karli Caves, are located in the state of Maharashtra. They're situated in Karli, near Lonavala, in the Pune district. The caves are a complex of ancient Buddhist rock-cut shrines, with the oldest dating back to 160 BC. They're considered one of the best preserved Buddhist caves in the state.

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The Karla Caves, also known as Karli Caves, are located in the state of Maharashtra. They're situated in Karli, near Lonavala, in the Pune district. The caves are a complex of ancient Buddhist rock-cut shrines, with the oldest dating back to 160 BC. They're considered one of the best preserved Buddhist caves in the state.

A monopoly market, in simple terms, means a single seller selling a unique product. The seller dominates the market by offering a unique product, setting its own prices, and high barriers restricting new entrants.

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A monopoly market, in simple terms, means a single seller selling a unique product. The seller dominates the market by offering a unique product, setting its own prices, and high barriers restricting new entrants.

Kanai-Boroxiboa is an archaeological site in Assam that is famous for its ancient stone sculptures and inscriptions. It is believed to be the ancient capital of the Salasthambha Kingdom and dates back to the 4th century AD.

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Kanai-Boroxiboa is an archaeological site in Assam that is famous for its ancient stone sculptures and inscriptions. It is believed to be the ancient capital of the Salasthambha Kingdom and dates back to the 4th century AD.

Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

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Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

Bihar is the most densely populated state in India, with 1,102 people per square kilometer, according to 2011 census data. The next most densely populated states are West Bengal (1,028 people per square kilometer) and Kerala (860 people per square kilometer).

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Bihar is the most densely populated state in India, with 1,102 people per square kilometer, according to 2011 census data. The next most densely populated states are West Bengal (1,028 people per square kilometer) and Kerala (860 people per square kilometer).

Khardung La is located in the Leh district of Ladakh, a union territory of India. The pass is 40 kilometers north of Leh on the Ladakh Range. It's known as the gateway to the Nubra and Shyok valleys, and connects the Indus and Shyok river valleys.

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Khardung La is located in the Leh district of Ladakh, a union territory of India. The pass is 40 kilometers north of Leh on the Ladakh Range. It's known as the gateway to the Nubra and Shyok valleys, and connects the Indus and Shyok river valleys.

Oblate Sphere

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Oblate Sphere

Suryya Kumar Bhuyan was a renowned Assamese historian and scholar who wrote the "Buranjis", a comprehensive history of Assam. He was a pioneer in the field of Assamese historiography and his works are considered classics in the study of Assam's history and culture.

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Suryya Kumar Bhuyan was a renowned Assamese historian and scholar who wrote the "Buranjis", a comprehensive history of Assam. He was a pioneer in the field of Assamese historiography and his works are considered classics in the study of Assam's history and culture.