Question

2. Find the perimeter of each of the composite figures: please explain how you got the anser please

Answer 1

a) 52

b) 21 + 6.25π

Explanation:

Part (a)

the sides which we don't have:

(longer side): 7+6 = 13m

(shorter side): 13—8= 5m

So:

Perimeter = 2P = 13+5+7+8+6+13=52

Part (b)

perimeter of the half circle:

`\pi * {r}^(2) = \pi * {2.5}^(2) = 6.25\pi`

So:

Perimeter = 2P = 2×8 + 5 + 6.25π = 21 + 6.25π