Answer:
18.25
Step-by-step explanation:
surface area = 4 x pi x r^2
diameter = 1 so radius = 1/2 = 0.5
4 x 3.14 x 0.5^2 = 3.14 meters^2
Answer:
r=-6
Step-by-step explanation:
6r-7r=13-7
-r=6
r=-6
Answer: for every 3 triangles there are 5 squares. not 4. so the ratio is 3:5.
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