Question

A rectangle has an area of 20 square centimeters.

Which of the following could be the rectangle's length and width?
(Area = length x width)
Choose all answers that apply:
3 cm and 8 cm
1 cm and 20 cm
2 cm and 10 cm
4 cm and 5 cm

Answer 1

All but the first answer choice could be the length and width of a rectangle.

Explanation:

3 cm and 8 cm produce 24 cm^2 when multiplied together. Reject.

1 cm and 20 cm, when multiplied together, result in 20 cm^2. Select.

2 cm and 10 cm => 20 cm^2 Select

4 cm and 5 cm => 20 cm^2. Select