Answer:
A = 16 cm^2
Step-by-step explanation:
Since all of the sides in a square are equal, they are each 4 cm. 4 + 4 + 4 + 4 was added to find the perimeter. To find the area, you do 4 x 4, which is 16.
Perimeter means finding the distance around the triangle.
The simplest way to find the perimeter of a triangle is to add up the length of all of its sides
so perimeter of the large triangle = x + y + 5 +20
So Brianna is correct
The answer: 1.2
Work:
2 equations: 150=100% and x=0.8%
Combine these
150/x=100/0.8
150= 125x
X=1.2