3 years ago

A circle has circumference of 20.7cm. What is the area of the circle? Using 3.14

Mathematics

2 answers:

Alex787 [66]3 years ago

4 0

Circumference=2pi*r
20.7=2pi*r
r=3.296 or 3.3
A=pir^2
a=34.1946 or about 34.19

krek1111 [17]3 years ago

4 0

Hey!

Circumference = 20.7 cm
Circumference of circle= 2πr

20.7= 2×3.14×r
20.7=6.28×r
20.7/6.28= r
r= 3.29 cm

Area of circle = πr^2
Area= 3.14×3.29×3.29
Area= 33.98 cm^2

Hope it helps...!!!

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