Question

Maggie found the area of the irregular figure by dividing it into a triangle and a rectangle.

A figure can be broken into a rectangle and triangle. The rectangle has a base of 6 centimeters and height of 5 centimeters. The triangle has a base of 3 centimeters and height of 2 centimeters.


Her work is shown below.


Area of rectangle = bh = (6 cm)(5 cm) = 30 Centimeters squared

Area of triangle = bh = (2 cm)(3 cm) = 6 Centimeters squared

Area of entire figure = 30 Centimeters squared + 6 Centimeters squared = 36 Centimeters squared


Which best describes the error that Maggie made?

She didn’t use the correct formula for the area of the triangle.

She didn’t use the correct formula for the area of the rectangle.

She didn’t find the dimensions of the triangle correctly.

She didn’t combine the areas of the triangle and the rectangle correctly

Answer 1

She didn’t use the correct formula for the area of the triangle.

Explanation:

Answer 2

9514 1404 393

Answer:

(a) She didn’t use the correct formula for the area of the triangle

Explanation:

The formula for the area of the triangle should be ...

A = 1/2bh

Maggie did not use the correct triangle area formula.