Answer:
15.The ratio is (√2)/2.
11 A. A=314.2in^2
6.
figure C
Perimeter
3 * (1/2) * (6π) + (1/2) * (18π) = 18π cm
Area
3 * (1/2) * ((3 ^ 2) π) + (1/2) * ((9) ^ 2π) = 54π cm ^ 2
Figure B
Perimeter
6 * (1/2) * (4π) + 2 * (4) = (12π + 8) cm
Area
3 * (4 * 4) = 48 cm ^ 2
11 B. 78.54 cm^2
Step-by-step explanation:
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