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xeze [42]
3 years ago
7

I would appreciate I someone could help me with these questions

Mathematics
1 answer:
svet-max [94.6K]3 years ago
8 0
38: it's a right triangle
39:
area:
a = \pi {r}^{2}
a = 3.14 \times {10}^{2} = 314

circumference:
c = \pi \times diameter
c = 3.14 \times 20 = 62.8
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3 years ago
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