Question

(cl 2-119) find the area of each figure. a. 12\ 15\ 10\ 8\ b. 3 cm 8 cm

Explanation:

Step1: Analyze figure a

We can consider figure a as a large rectangle. The vertical side of the large - rectangle is 12 inches and the horizontal side is 15 inches.

Step2: Calculate area of figure a

The area formula for a rectangle is $A = l\times w$. For figure a, $l = 15$ inches and $w = 12$ inches. So $A_a=15\times12 = 180$ square inches.

Step3: Analyze figure b

Figure b is a triangle with base $b = 8$ cm and height $h = 3$ cm.

Step4: Calculate area of figure b

The area formula for a triangle is $A=\frac{1}{2}bh$. Substituting $b = 8$ cm and $h = 3$ cm, we get $A_b=\frac{1}{2}\times8\times3=12$ square cm.

Answer:

a. 180 square inches
b. 12 square cm