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

Answer:

Option C. $3.2\ qt$

Step-by-step explanation:

Step 1

Find the area of triangle

we know that

The area of a triangle is equal to

$A=\frac{1}{2}bh$

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

$A=\frac{1}{2}(4)(8)=16\ ft^{2}$

Step 2

By proportion

$\frac{0.2}{1}\frac{qt}{ft^{2}}=\frac{x}{16}\frac{qt}{ft^{2}}\\ \\x=16*0.2\\ \\x=3.2\ qt$

Answer 2

Answer:

C 3.2

Step-by-step explanation:

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