CPM Homework Help : CC1MN Problem 6-65

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Home > CC1MN > Chapter 6 > Lesson 6.2.2 > Problem 6-65

6-65.

Find the missing side lengths of each rectangle, (a) and (c) or square (b) and (d).

width $x \text{ cm}$
length $100 \text{ cm}$
interior $\text{A} = 500 \text{ cm}^2$
Hint (a):
To find the area of a rectangle, multiply the length
by the width.
Solution (a):
$(100\text{ cm})(x\text{ cm})=500\text{ cm}^2$
Solve for $x$ .

width $y \text{ cm}$
interior $\text{A} = 64 \text{ cm}^2$
length $8 \text{ cm}$
Hint (b):
Recall the properties of a square. All the side lengths must be equal.
Answer (b):
Since one side is already given, you can conclude that the other side is also $8$ cm.

width $5 \text{ cm}$
length $r \text{ cm}$

interior $\text{A} = 82 \text{ cm}^2$

Hint (c):
See the help for part (a).
Answer (c):
$16.4$ cm

interior $\text{A} = 25 \text{ cm}^2$
length $w \text{ cm}$
width $5 \text{ cm}$
Hint (d):
See the help for part (b).

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