- #1

zak100

- 462

- 11

## Homework Statement

Find the area and perimeter of shared region in the following diagram:

## Homework Equations

Area of shared Region =x/360 * PI * radius * radius

Perimeter of shared Region = x/360 * 2* PI* radius[/B]

## The Attempt at a Solution

I am finding the area of circle & then subtracting the area of triangle to find the area of shared region:

Thus

A of circle = Pi * radius * radius

= 3.14 * 12 * 12

= 144 PI

A of Triangle (Note its an equilateral triangle) = sqr(s) * sqrt(3)/ 4 = 36 sqrt(3)

Therefore ans = 144PI - 36 sqrt(3) but this is a wrong answer.

Similarly perimeter of circle = 12 * 3 = 36

Circumference of circle = 2 * PI * radius

= 2* PI * 12

=24 PI

Therefore ans= 24PI - 36

Some body please guide me why my logic is not coreect.

Zulfi.