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Find the area of a circle having a radius of 9 cm

Find the area of a circle having a radius of 9 cm
asked 58.9k views
2 votes
Find the area of a circle having a radius of 9 cm

asked
User Oliver Baumann
by
7.8k points

2 Answers

3 votes

Answer:

81pi cm^2

Explanation:

formula : pi*r^2

pi*9^2

pi*81

answered
User Angelo Marcotullio
by
8.2k points
1 vote

Answer:

81 pi cm^2

or approximately 254.34 cm^2

Explanation:

The area of a circle is given by

A = pi r^2

A = pi (9)^2

A = 81 pi

Using 3.14 as an approximation for pi

A = 81 (3.14)

A =254.34 cm^2

answered
User Neelesh
by
8.0k points
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