The circumference of a coin is 7.42 cm. What is the area? using 3.14 for π

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asked Sep 25, 2019 219k views

1 Answer

Brandon Pelfrey · Answer 1 · 2019-09-30T20:11:36+0000

By the question,
π = 3.14
circumference = 7.42 cm
or,. 2πr. =7.42
or,. 2×3.14×r. =7.42
or,. 6.28r. =7.42
or,. r. =7.42÷6.28
∆. r. =1.18 cm
Again,
Area of circumference= πr^2
=3.14 × 1.18^2
=3.14 × 1.39
=4.37 cm^2

The circumference of a coin is 7.42 cm. What is the area? using 3.14 for π

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