The perimeter of an equilateral triangle with side s is 3s. Diana is making a decorative pillow for her living room. The pillow is shaped like a triangle with lace around the edges. Each side of the pillow is 7 inches long. What is the perimeter of the pillow?

easy 21

This is right

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.