Question

Christian is going to paint the
wall underneath his staircase.
How many square feet will he
need to paint?

Answer 1

Answer:

60 feet

Step-by-step explanation:

12(10)=120

120/2=60

Answer 2

Answer:

60 ft²

Step-by-step explanation:

You must calculate the area of a right triangle.

The formula of an area of a right triangle:

$A=\dfrac{ab}{2}$

a, b - legs

We have

$a=10ft,\ b=12ft$

Substitute:

$A=\dfrac{(10)(12)}{2}=\dfrac{120}{2}=60\ ft^2$