Question

The diagrams shows the dimensions of an outdoor deck. The deck is going to be coated with a water sealer. A one-gallon container of water sealer costs $34 and covers approximately 200 square feet. What is the cost to buy enough containers of water sealer for the deck?

A. $34
B. $68
C. $83
D. $102​

Answer 1

So to find the answer we need to know the area of the deck by splitting each individual part into smaller shapes.

So for the rectangle up top we have: 50ft
Then for the triangle: 12.5ft
Then another rectangle above the triangle which is: 50 ft
Then the biggest rectangle is: 375ft

We would add this all together.

50+50+375+12.5=487.5

So one gallon costs $34 and covers 200 ft

So 487.5/200=2.437->multiply it by 34 and get 82.8 or $83

Your answer is $83