Mathematics
Grade-7
Easy

Question

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

  1. 1323
  2. 2547
  3. 1452
  4. 2415

hintHint:

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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