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Mathematics

Grade-7

Easy

Question

Determine the area of the circle having 21 m as radius.

1323
2547
1452
2415

hint Hint:

$a r e a space o f space c i r c l e space equals space πr squared$

The correct answer is: 1323

$text Area end text equals pi r squared space space straight A equals 22 over 7 cross times 21 cross times 21 space straight A equals 22 cross times 3 cross times 21 text Area end text equals 1323 space s q. m$

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