Question

Erin covered a box with contact paper. The dimensions of the box are shown in the figure below: The contact paper costs 8¢ per square inch. She will only pay for the contact paper used to cover the box, even if there is waste or extra. How much money did Erin spend on the contact paper? A.) $20.72 B.) $41.44 C.) $48.12 D.) $73.14

Answer 1

Answer:

B

Step-by-step explanation:

The first step is to find the surface area of the prism. A rectangular prism has 3 pairs of rectangular sides. In this case, they have dimensions of 9 by 11, 9 by 8, and 11 by 8 units. The surface area of the whole prism is therefore:

$2(9\cdot 11)+2(9\cdot 8)+2(11\cdot 8)= \\\\2(99)+2(72)+2(88)= \\\\198+144+176= \\\\518$

Multiplying this by the price of 8 cents per square inch, you get a total price of  $41.44. Hope this helps!

Answer 2

Answer: b 41.44$

Step-by-step explanation: