Area and Perimeter

Formulas

100

What is the area formula for a rectangle?

A = l * w

200

What is the area formula for a square?

A = s * s

300

How do you find the perimeter of a triangle?

Add up all the outside edges

400

What is the formula for area of a trapezoid?

1/2 x h (b1 + b2)

500

What is the area for a triangle?

A = (b * h) 1/2

Perimeter

100

Find the perimeter of the rectangle with a length of 8cm and a width of 7 cm.

P = 30cm

200

Find the perimeter of a square that has a side length of 12cm.

P = 48 cm

300

Find the perimeter of a triangle with one side length 6.5ft, one side length 4.5ft, and one side length 9.5ft.

P = 20.5ft

400

Find the perimeter of a triangle if it has a base of 6m, a height of 8 m, and two side lengths that equal 3m.

P = 12m

500

Find the perimeter of a trapezoid with base lengths of 11 and 12 in.   Two side lenths of 7 and 8 in.

P= 38 in

Area

100

Find the area of a rectangle that has a length of 13cm and a width of 5 cm.

A = 65 cm2

200

Find the area of a square with side length 7 in.

A = 49 in2

300

Find the area of a right triangle with base = 7 cm and height = 8cm.

A = 28 in2

400

Find the area of a trapezoid with base 1 = 9cm, Base 2 = 11 cm, and height = 4cm.

A = 40cm2

500

Rectangle a- length of 12.5 cm and width of 7cm

Rectangle b- length of 6.8 cm and width of 14cm

Which has bigger area?

A- 87.5 cm squared

B- 95.2 cm squared

B

Problem Solving

100

The classroom is getting new pink carpet. If the room has a length of 10cm and a width of 6 cm. How much carpet will the room need.

The room will need 60 cm2 of carpet.

200

Amy needs to order a shade for a triangular-shaped window that has a base of 6 feet and a height of 4 feet. What is the area of the shade ?

A= 12 square feet

300

Mary needs to fence around her backyard. The length of her backyard is 5m and the width is 8m. If fencing comes in sections of 2 how many sections does Mary need to buy?

13 sections

400

Tony needs to make a small dog fence in the shape of a rectangle in his backyard for his new puppy. The length of his backyard is 5m and the width is 8m. If the fence is $3 a meter.  How much will it cost?

$78.00

500

A square pizza box has an area of 64 in2. What is the length of one side of the pizza box?

8 in

Review (other units)

100

What is 25% of 80?

20

200

Put the fraction into a decimal 9/100

.09

300

Write all the factors of 12.

1, 2, 3, 4, 6, 12

400

Reduce the fraction into lowest terms. 45/50

9/10

500

Add the mixed numbers together. 2 3/9 + 5 7/18

7 13/18