ABCDE

If a triangle has sides x, x - 2, x + 4, what is the perimeter?

• 3x - 6

• 3x - 2

• 3x + 2

• 3x + 6

The lengths of two sides of a triangle are 3x-5 and x+3. If the perimeter of a triangle is 5x-1, what is the length of the third side in terms of x?

• x+2

• x+1

• x-1

• x-2

If a rectangle has length x and width x - 2, what is the perimeter of the rectangle in terms of x?

• 2X - 2

• 2X - 4

• 4X - 2

• 4X - 4

A rectangular swimming pool is x meters wide. The length of the swimming pool is twice as long as the width. If the perimeter of the pool is 60 meters, which of the following equations represents the given information?

• X + X + 2X + 2X = 60

• X + 2X = 60

• X + 2 + X + 2 = 60

• 2X + 2X +2X +2X = 60

A rectangle of length l and width w has a perimeter P = 2L + 2W. What is the length of the rectangle in terms of P and w?

• P - 2W

A rectangle has a perimeter of 20. If the length is 6, what is the width?

• 10

• 4

• 14

• 22

If the length of a rectangle is 2 more than the width and if the perimeter of the rectangle is 40, what is the width of the rectangle?

• 9

• 12

• 15

• 24

The small base of an isosceles trapezoid is x centimeters long. The large base of the trapezoid is 3 centimeters shorter than twice the length of the small base, and each of the two remaining sides of the trapezoid is 2 centimeters longer than the small base. If the perimeter of the trapezoid is 36 cm., which of the following must be true?

• 4x - 3 = 36

• 4x - 1 = 36

• 5x - 1 = 36

• 5x + 1 = 36

• 40 cm

• 44 cm

• 45 cm

• 48 cm

Contractors will cover the flat rectangular roof of a community college with pebbles. The roof measures 86 feet long by 75 feet wide. What is the area that will be covered with pebbles? (Area = length x width)

• 336

• 1728

• 3456

• 6450