Question

What is the area of a circle with a radius of 42 inches?
(Use 3.14 for Pi.)

Answer 1

$area \: of \: cirlcle = \pi {r}^{2} \\ = (22 \div 7) \times {42}^{2} \\ = 22 \times 6 \times 42 \\ = 5544 \: {inch}^{2}$
hope it helps
where r is radius of circle
value of 22÷7 = 3.14

Answer 2

Heya dear user !!!

Here is your answer,

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Area of circle = πr² (in which 'r' is the radius of the circle)

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Q. What is the area of a circle with radius of 42 inches

Solution :

Area of the circle = πr²

= 3.14 × (42)²

= 3.14 × 1764

= 5538.96

Hence, area of the circle = 5538.96 inches square.

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Hole it helps.