Question

Eleven rectangular 9-inch by 12-inch pictures hang on a wall. How many square inches of the wall's surface area are covered by the pictures?

Answer 1

Answer:

there will be about 108 inches

Answer 2

Answer:

1188

Step-by-step explanation:

We multiply all three numbers together. There are two quick ways of doing this; both are shown below:$$11\cdot 9 \cdot 12 = (10 + 1)\cdot 108 = 1080 + 108 = \boxed{1188}$$$$11\cdot 9 \cdot 12 = 99\cdot 12 = (100 - 1)\cdot 12 = 1200 - 12 = \boxed{1188}$$