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Mathematics

Grade-7

Easy

Question

Determine the radius of the circle with an area of 3.14 square unit.

9
3
1
12

hint Hint:

we know the area of the circle = $πr squared$

The correct answer is: 1

$A r e a equals pi r squared equals 3.14 r squared equals fraction numerator 3.14 over denominator 3.14 end fraction r squared equals 1 r space equals plus-or-minus 1 b u t space minus 1 space c a n space n o t space b e space t h e space r a d i u s space o f space t h e space c i r c l e s o straight r equals 1 text unit. end text$

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