Mathematics

Ashanti Marks

27 December, 15:19

Ryder is building a workbench.

The top of the workbench is a rectangular piece of plywood that is 6.25 feet long and 1.83 feet wide.

Part A

Round the length and width to the nearest whole number.

Then estimate the perimeter of the workbench.

Which of the following equations models this estimate of the perimeter?

A. 6 + 6 + 2 + 2 = 16

B. 6 * 2 = 12

C. 7 + 7 + 2 + 2 = 18

D. 7 * 2 = 14

Part B

Round the length and width to the nearest tenth.

Then estimate the perimeter of the workbench.

Which of the following equations models this estimate of the perimeter?

A. 6.2 + 6.2 + 1.8 + 1.8 = 16

B. 6.2 * 1.8 = 11.16

C. 6.3 + 6.3 + 1.8 + 1.8 = 16.2

D. 6.3 * 1.8 = 11.34