Question

find the area of a circle whose diameter is 28 cm

Answer 1

Heya !!!

This is your answer.

Given :-
Diameter = 28 cm.
Radius = D/2 = 14 cm.

Area of circle = πr²
$= \frac{22}{7} \times 14 \times 14 \\ = 22 \times 2 \times 14 \\ = 44 \times 14 \\ = 616 {cm}^{2}$
Hence the area of the given circle is 616 cm².

Hope it helps

Answer 2

The diameter is 28 cm then

28×22÷7=
4×22=88 or radius = 28÷2=
14×22×2÷7=
88




We have two methods one method is = diameter ×22÷7

and anathor is = radius × 22×2÷7

these two methods are perfectly right we can use this methods any way and any questions

and these question's answer is 88 .





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