Answer:

Step-by-step explanation:
we know that
The surface area of a cylinder is equal to

we have

----> the radius is half the diameter
assume

substitute


Answer: 56 kids
Step-by-step explanation: 70 * 0.2 = 14 70 - 14 = 56
Answer:
13 by 20 inches
Step-by-step explanation:
Represent the quantities as follows:
P = 2W + 2L
L = W + 7
Then P = 2W + 2(W + 7), or P = 4W + 14
and this formula has the value 66 inches.
Thus, P = 66 inches = 4W + 14 inches, or
52 inches = 4W
Dividing both sides by 4, we get W = 13 inches.
The width is 13 inches and the length is (13 + 7) inches, or 20 inches.
Answer:
3x+5=3x+5
they are both the same line
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