Posted by **Anonymous** on Thursday, December 6, 2012 at 12:01am.

find circumference and area of circle use 3.14 for unknown round to nearest tenths. 2) r=11.5

3)d=3.5

show steps to solve

- math,algerbra -
**bobby**, Thursday, December 6, 2012 at 3:14am
area of circle is given by equation:

A = pi*r^2 ,

where A is area

pi is 3.14

r is radius

2) A = pi*(11.5^2) = 3.14*(11.5^2) = ?

3) radius is half the diameter d

so r = 3.5 /2 = 1.75

Then area is,

A = pi*(1.75^2) = 3.14*(1.75^2) = ?

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