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Nitella [24]
3 years ago
5

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

Mathematics
1 answer:
stiv31 [10]3 years ago
5 0

Answer:

a) 52

b) 21 + 6.25π

Step-by-step 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  \times {r}^{2}  =  \pi  \times {2.5}^{2}  = 6.25\pi

So:

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

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