Question

chazs new game room is shaped like a cube. it measures 15 feet across. if he wants to paint only the walls of the room, what is the surface area of the region he will paint? a 720 ft² b 144 ft² c 864 ft² d 900 ft²

Explanation:

Step1: Find 1 wall's area

$\text{Area of 1 wall} = 15 \times 15 = 225\ \text{ft}^2$

Step2: Calculate total wall area

A cube has 4 walls to paint.
$\text{Total area} = 4 \times 225 = 900\ \text{ft}^2$

Answer:

D. $900\ \text{ft}^2$