Police Math Test Police Math Area and Perimeter Calculations 2

Question 1

A crime scene is taped off as a rectangle 18 feet long and 12 feet wide. What is the total length of tape needed to go around the perimeter?

Accepted Answer

60 feet

Answer

Perimeter of a rectangle = 2(length + width) = 2(18 + 12) = 60 feet.

Question 2

An officer measures a square evidence grid that is 9 feet on each side. What is the area of the grid?

Accepted Answer

81 square feet

Answer

Area of a square = side × side = 9 × 9 = 81 square feet.

Question 3

A parking lot is 50 feet by 40 feet. How many square feet of surface must be searched?

Accepted Answer

2,000 square feet

Answer

Area = length × width = 50 × 40 = 2,000 square feet.

Question 4

A triangular plot at an intersection has a base of 20 feet and a height of 15 feet. What is its area?

Accepted Answer

150 square feet

Answer

Area of a triangle = ½ × base × height = ½ × 20 × 15 = 150 square feet.

Question 5

A holding cell measures 12 feet by 10 feet. What is its perimeter?

Accepted Answer

44 feet

Answer

Perimeter = 2(12 + 10) = 44 feet.

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