Question

Herbert is decorating the bulletin board in the school's lobby. The bulletin board is a 7 ft by 11 ft rectangle. He decides to add a black border around the entire bulletin board. What is the length of border that he needs?

Answer 1

Answer: 36 feet

Explanation:

The length of border that Herbert needs simply means that we've to calculate the perimeter.

The sides of the rectangle are 7 ft by 11 ft. The perimeter of a rectangle will be:

= 2(Length + Breadth)

= 2( 7ft + 11ft)

= 2 × 18

= 36 feet