Question

Perimeter of protector? Explain

Answer 1

Answer:

r(π+2)

Step-by-step explanation:

we know the perimeter of a circle = 2πr

perimeter of a semicircle therefore = 1/2 2πr

or πr

perimeter of a protractor = πr + the diameter

because of its shape.

or πr + d

or as d = 2r

it can be written as πr + 2r

taking r common

r(π+2)