Question

Alberto is painting a large triangle on one wall of his bedroom. The base of the triangle is 4 ft, and the height is 8 ft. It takes 0.2 quart of paint to cover 1 square foot. How many quarts of paint does Alberto use?

A. 0.8 qt
B. 1.6 qt
C. 3.2 qt
D. 6.4 qt

Answer 1

C 3.2

Explanation:

I know because I took the test in K12 and got it right, Have a great life.

Answer 2

Option C.
`3.2\ qt`

Explanation:

Step 1

Find the area of triangle

we know that

The area of a triangle is equal to

`A=(1)/(2)bh`

where

b is the base of triangle

h is the height of triangle

In this problem we have

`b=4\ ft`

`h=8\ ft`

substitute in the formula

`A=(1)/(2)(4)(8)=16\ ft^(2)`

Step 2

By proportion

`(0.2)/(1)(qt)/(ft^(2))=(x)/(16)(qt)/(ft^(2))\\ \\x=16*0.2\\ \\x=3.2\ qt`