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Perimeter = 30 in.
Area = ?

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56

Step-by-step explanation:

the length of the missing side is 7

so 7 x 8 = 56

To find the missing side:

You must add 8 + 8 = 16

Subtract 16 from the total perimeter = 14.

Divide 14 by 2 = 7 you divide by two since there are two missing lengths and when you add them they have to equal to 14.

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137