Question

What is the area of the shaded region in the figure below?

Answer 1

area of shaded = area of sector - area of triangle.
first find area of sector with formula =(1/2)r^2\[\theta.\]

Answer 2

1/2 r^2 θ.

Answer 3

what is θ

Answer 4

it is the angle in radians.

Answer 5

is it 1/2 8^2 θ

Answer 6

yes change 90 degree in radians.

Answer 7

oh ok thanks

Answer 8

no problem.

Answer 9

wait do i have to multiply 1/2* 8^2* 90

Answer 10

yes u have to multiply but not 90.. u have to convert it into radians.. do u know how to convert degree in radians?

Answer 11

no i don't know how to convert it

Answer 12

angle * pi/180

Answer 13

so it 90*3.14/180