Determine the surface area of the rectangle prism below

A. 18 square meters
B. 24 square meters
C. 52 square meters
D. 64 square meters

Determine the surface area of the rectangle prism below A. 18 square meters B. 24 square metersC. 52

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Ответ:

tvoalicea

27.02.2021

Mathematics

252

Step-by-step explanation:

y varies directly with x means y=kx where k is a constant.

A constant means it never changes no matter what the point (x,y) they give.

So y=kx means y/x=k (I just divided both sides by x here).

So we have the following proportion to solve:

$\frac{y_1}{x_1}=\frac{y_2}{x_2}$

$\frac{70}{10}=\frac{y_2}{36}$

70/10 reduces to 7:

$7=\frac{y_2}{36}$

Multiply both sides by 36:

7(36)=y_2

Simplify left hand side:

252=y_2

So y is 252 when x is 36.

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Determine the surface area of the rectangle prism below A. 18 square meters B. 24 square metersC. 52 square meters D. 64 square meters