Question

The picture shows the top view of a piece of glass.

A rectangular piece of glass is shown. The length is measured as 4 feet. The width is measured as 2 and one-half feet.

Which equations can be used to find the area, in square feet, of the piece of glass? Select all that apply.

(1 point)

A = 212 × 4


A = 52 + 4


A = (212 + 212) + (4 + 4)


A = 52 × 4


A = (2 × 212) + (2 × 4)


A = 212 + 4

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Answer 1

Area of a rectangle = length × width. So use 4 × 2 1/2 (or 4 × 5/2).

Correct choices: A = 2 1/2 × 4 and A = 5/2 × 4 (both equal 10 ft²).

The other equations are additions or decompositions that do not equal 10, so they are not correct.