Question

If r is the radius of the a semi circle of the find its perimeter

Answer 1

Answer:

r(π+2) units

Step-by-step explanation:

Perimeter of the semi-circle=

$\frac{1}{2} \times 2\pir + 2r units\\ = \pir + 2r \: units \\ = r(\pi + 2) \: units$

Answer 2

Answer:

If r is the radius of the a semi circle of the find its perimeter.

Circumference of Semicircle = 2πr/2 = πr

And

Diameter = 2r

∴ Perimeter = πr + 2r = r(π + 2)

HOPE THIS HELPS YOU...........

PLZ MARK AS BRAINLEST........