Review of Area

Formulas

100

What is the formula for the area of a circle?

What is 

A = pir^2

200

What the formula for area of a triangle?

What is 

A = (bh)/2 or 1/2bh

300

What is the formula for area of a rectangle?

what is A = lw  or bh

400

What is the formula for area of a parallelogram?

What is A = bh

500

What is the formula for area of a square?

What is A = s²

Parallelograms

100

Find the area when then the... Base= 6 Height=7

What is 42 units²

200

Find the area when then the... Base= 12 Height=9

What is 108 units²

300

Find the area when then the... Base= 14 Height=19

What is 266 units²

400

Find the area when then the... Base= 5in Height=7in

What is 35 inches²

500

Find the area when then the... Base= 8km Height=9km

What is 72 kilometers²

Circles

100

r = 1.9 m Calculate the area of the circle.

use 3.14 as pi

What is 11.34 meters²

200

r = 1.3 mm Calculate the area of the circle.

Use 3.14 as pi

What is 5.30 mm²

300

r = 4.7 mm Calculate the area of the circle.

Use 3.14 as pi

What is 69.36 mm²

400

d = 2.2 m Calculate the area of the circle.

Use 3.14 as pi

What is 3.80 m²

500

r = 2 cm Calculate the area of a HALF circle

Use 3.14 as pi

What is 6.28 m²

Triangles

100

Find the area when then the... Base= 5 Height=12

what is 30 units²

200

Find the area when then the... Base= 7 Height=12

What is 42 units²

300

Find the area when then the... Base= 3 Height=7

What is 10.5 units²

400

Find the area when then the... Base= 8 Height=10

What is 40 units²

500

Find the area when then the... Base= 12 Height=24

What is 144 units²

Rectangles

100

Find the area when then the... Length= 7m Width= 9m

What is 63 m²

200

Find the area when then the... Length= 4 Width=6

What is 24 unit²

300

Find the area when then the... Length= 11 Width=6

What is 66 units²

400

Find the area when then the... Length= 12cm Width=4cm

What is 48 cm² 

500

Find the area when then the... Length= 21 Width=12

What is 252 units²