Question

Plz answer last question and im lost!

Answer 1

`\pi` radian

Explanation:

We know that angle for a full circle is 2
`\pi`

In the given figure shape is semicircle

hence,

angle for semicircle will be half of angle of full circle

thus, angle for given figure = half of angle for a full circle = 1/2 * 2
`\pi` =
`\pi`

Thus, answer is
`\pi` radian

alternatively, we also know that angle for a straight line is 180 degrees

and 180 degrees is same as
`\pi` radian.