Posted by **Anne** on Tuesday, December 7, 2010 at 9:20pm.

I don't understand how to find the aproximate area of a shaded region

This problem has a big cirlce with 1/4 shadded with a radius of 20 cm.

the answer chocies are

A. 90 cm squared

B. 270 cm squared

C. 314 cm squared

D. 1.256 cm squared

how do I find the answer?

- Math question -
**Bob**, Tuesday, December 7, 2010 at 9:27pm
pi*r^2

3.14*20cm.^2

=1256.63

take that and divide by four and you get 314.16

- Math question -
**Danny**, Tuesday, December 7, 2010 at 9:34pm
I don't understand how you got 1256.63

- Math question -
**Anna**, Tuesday, December 7, 2010 at 9:37pm
I don't either I got 62.8

## Answer This Question

## Related Questions

- math- geometry - I will try and explain this since I can't draw the picture ...
- trig - Both circles have the same center and radius of the larger cirlce is R. ...
- Geometry - Please Please HELP!!!! I need the answer to this and i've worked it ...
- Geometry (PLEASE HELP!!!) - Please Please HELP!!!! I need the answer to this and...
- math - A rectangle is removed from a right triangle to create the shaded region ...
- statistics finding the shaded region - Find the area of the shaded region. The ...
- Math - Marian drew a picture of two circles.She wanted to shade only the outer ...
- Geometry - ABGF is a square with half the perimeter of square ACDE. GD = 4in. ...
- Math - A triangle is placed in a semicircle with a radius of 3cm, as shown below...
- Math - The problem is two circles that each circle has 4 sections. One cirlce is...

More Related Questions