Ahmed is making a poster for science class. He use a piece of posterboard that’s 3 feet long and 4 feet wide. How big is his poster?
A
17 square feet
B
12 square feet
C
7 square feet
D
8 square feet
To find the size of Ahmed's poster, we need to calculate the area of the posterboard. The formula for finding the area of a rectangle is length × width.
Given that the length of the posterboard is 3 feet and the width is 4 feet, we can calculate the area as follows:
Area = Length × Width = 3 feet × 4 feet = 12 square feet
Therefore, Ahmed's poster is 12 square feet in size.
The correct answer is B) 12 square feet.