Question

A triangle with a base of 5 inches a height of 4 inches.

Millie makes a placemat with a triangular pattern. Each triangle has a base of 5 inches and a height of 4 inches. Millie sews together a total of 42 triangles.

Each triangle has an area of inches2
The total area of the placemat is inches2
help

Answer 1

Explanation:

`Area=(1)/(2)bh\\\\=(1)/(2)*5*4\\\\=5*2`

= 10 square inches

Area of the place mat = 42 * 10 = 420 square inches

Area of each triangle = 10 square inches

Area of the place mat = 420 square inches