Question

Find the perimeter of the figure shown above with a side length 5 units.(Each figure is a square). a. 10 units c. 30 units b. 20 units d. 40 units Please select the best answer from the choices provided A B C D

Answer 1

ANSWER

d. 40 units

EXPLANATION

Method 1

Perimeter is the total distance around the figure.


The perimeter is

$= 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5$

$= 40 \: units$


Method 2

The three squares together formed a rectangle with dimensions,

$w = 5 \: and \: l = 15$




$Perimeter = 2w + 2l$


$Perimeter = 2(5) + 2(15)$

$Perimeter =10 + 30$


$Perimeter = 40 \: units$


The correct answer is D.