Question

part b: triangles find the area and 7. area = __ perimeter = __

Explanation:

Step1: Recall area formula

The area formula for a triangle is $A=\frac{1}{2}\times base\times height$. Here, base = 21 ft and height = 22 ft.

Step2: Calculate area

$A=\frac{1}{2}\times21\times22 = 231$ square - feet.

Step3: Recall perimeter formula

The perimeter of a triangle is $P=a + b + c$, where $a$, $b$, and $c$ are the side - lengths of the triangle. Here, $a = 21$ ft, $b = 22$ ft, and $c = 30$ ft.

Step4: Calculate perimeter

$P=21 + 22+30=73$ ft.

Answer:

Area = 231 square - feet
Perimeter = 73 ft