- #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.