Area of Parallelograms and Triangles

Area of Parallelograms and Triangles

Multiple Choice

What equation do you use to find your answer?

• A = bh

• A = bh^2

• A = bh/2

• A = 1/2 bh

Multiple Choice

This is the "Substitution Step" to solve this problem. A = 56(8)

• True

• False

Multiple Choice

This is the "Substitution Step" to solve this problem. 56 = 8h

• True

• False

Multiple Choice

Which step do you use to solve for h?

• 56(8) = 8h(8)

• 56/8 = 8h/8

• 56 + 8 = 8h + 8

• 56 - 8 = 8h -8

Multiple Choice

Find the height.

• h = 448 in.

• h = 7 in.

• h = 8 in.

• h = 11 in.

Multiple Select

What equation do you use to find your answer?

• A = bh

• A = bh^2

• A = bh/2

• A = 1/2 bh

Multiple Choice

This is the "Substitution Step" to solve this problem.

h = (1/2)6(72)

• True

• False

Multiple Choice

This is the "Substitution Step" to solve this problem.

72 = (1/2)6h

• True

• False

Multiple Choice

Which step do you use to solve for h?

• 72(3) = (1/2)3h

• 72/3 = 3h/3

• 72/6 = (1/2)6h/6

• 72 + 6 = (1/2)6h +6

Multiple Choice

Find the height.

• h = 24 in.

• h = 12 in.

• h = 36 in.

• h = 3 in.

Multiple Choice

What is the substitution step for finding the area of this triangle?

• A = 11(22)/2

• A = 11(22)

• 2A = 11(22)

Multiple Choice

What is the area of this triangle?

• A = 242 m^2

• A = 121 m^2

• A = 121 m

• A = 242 m

Multiple Choice

What is the substitution step for finding the area of this parallelogram?

• A = 2(5)

• A = 6(2)

• A = 5(2)

• A = 2(6)

If you chose A = 2(6) and wondered why it was wrong.... It has to do with the order of the variables.

2(6) and 6(2) give you the same answer. However, you want to practice substituting the variables in the order you find them in the formula. b = 6 h = 2 So for A = bh the substitution is

A = 6(2).

Multiple Choice

What is the area of this parallelogram?

• A = 6 m

• A = 6 m^2

• A = 12 m

• A = 12 m^2