Please help me find the perimeter of the figure.

Given:

Triangle on the top of semi-circle.

Radius of the semi-circle = 16 mm

Sides of the triangle = 20 mm

To find:

The perimeter of the figure.

Solution:

Perimeter of the semi-circle = πr + 2r

Here 2 edges are merged with triangle. So 2r is not included in perimeter.

                                               = πr

                                               = 3.14 × 16

Perimeter of the semi-circle = 50.24 mm

Perimeter of the figure = Sum of the sides

                                      = 50.24 + 20 + 20

                                      = 90.24 mm

The perimeter of the figure is 90.24 mm.

answer: it's d

step-by-step explanation:

3 hours and 15 minutes

hope this : )