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Big Ideas Math: Modeling Real Life, Grade 6

BI

Big Ideas Math: Modeling Real Life, Grade 6 View details

1. Areas of Parallelograms

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Exercise 29 Page 290

The area of a parallelogram is the product of its base and its height.

9ft

Practice makes perfect

We are told that the base of the parallelogram is 6 feet and that its area is 54ft^2. We want to find the height h. Let's draw a diagram to illustrate the situation.

We know that the area of a parallelogram is the product of its base and its height. A= b h We can substitute A= 36 and b= 6 into this formula and solve for h, the height of the parallelogram. Let's do it!

A=bh

A= 54, b= 6

54= 6* h

▼

Solve for h

.LHS /6.=.RHS /6.

54/6=6h/6

Calculate quotient

9=h

Rearrange equation

h=9

We found that the height of the parallelogram is 9 feet.

Subchapter links

Try It p.286-287

Self-Assessment for Concepts & Skills p.287

Self-Assessment for Problem Solving p.288

Review & Refresh p.289