pythagorean theorem
Square of hypotenuse = square root of 8+square root of 8.
Square of hypotenuse =8+8
Square of hypotenuse = 16
Hypotenuse =4
According to Pythagorean theorem, the hypotenuse of another right triangle is calculated.
Square of hypotenuse = square of 3+square of 4.
Square of hypotenuse =9+ 16
Square of hypotenuse =25
Hypotenuse = 5
Here the hypotenuse is the radius of the circle.
According to the area formula of a circle = π× the square of radius
This is a quarter circle.
It is the square of a quarter × π× radius.
= 1/4× 5 squared
= a quarter ×25π
=6.25π