Question

find the outer perimeter of this figure. round your answer to the nearest hundredth. use 3.14 to approximate pi.

Answer 1

For semicircular

Outer perimeter

• πr
• 3.14(3)
• 9.42

Now

Total perimeter

• 5+5+9.42
• 18.42ft

Answer 2

19.42 ft

Explanation:

Triangular part = 5+5 =10

Semi-circular part = 1/2×2πr = 1/2×2×3.14×3 = 9.42

Perimeter = 10+9.42 = 19.42ft