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.
