We included HMH Into Math Grade 4 Answer Key PDF Module 9 Review to make students experts in learning maths.

Vocabulary

base
height

Question 1.
Draw and label a rectangle using the terms in the vocabulary box.

Concepts and Skills

Question 2.
Use Tools Max is marking off a rectangular section of the gym floor to practice bowling. The section has an area of 48 square meters and a length of 8 meters.
What is the width? Tell what strategy or tool you will use to answer the question, explain your choice, and then find the width.

Given,

Area of Section = 48 square meters

Length = 8 meters

We know, Area of Rectangle = Length X Width

So, 48 = 8 X Width

Width = 48/8 = 6

Therefore, Width of the section is 6 meters.

Question 3.
What is the area of the shaded part of the rectangle?

A. 31 sq yd
B. 53 sq yd
C. 59 sq yd
D. 109 sq yd

B. 53 sq yd

Total area = Length X Width = 12 x 7 = 84 square yards

Area of small section = Lenth X Width = 2 X 3 = 6 square yards

Area of large section = Length X Width = 5 X 5 = 25 square yards

Area of shaded part = Total area – area of small section and large section

= 84 – ( 6 + 25 ) = 53

Therefore, Area of shaded part = 53 Square yards

Question 4.
Shana is building a deck around a tree. She will cut a square space for the tree that has a side length of 3 feet. The deck will be a rectangle that measures 10 feet by 12 feet. What is the area of the deck?
__________

Total area of deck = Length X Width = 10 X 12 =120 square feet

Area of square space = Side X Side = 3 X 3 = 9 square feet

Area of remaining deck = 120 – 9 = 111 square feet

Therefore, area of Deck = 111 square feet.

Find the area of the shaded part of the figure.

Question 5.

Area = ____

Area of shaded part = Base X Height = 6 X 14 = 84 square cm

Question 6.

Area = ____

Area of top portion = Base X Height = 2 X 6 = 12 square feet

Area of bottom portion = Base X Height = 5 X 3 = 15 Square feet

Total Area = 12 + 15 = 27 square feet.

Question 7.

Area = ____

Area of Square = Side X Side = 5 X 5 = 25 Square inches.

Question 8.

Area = ____

Total area = Base X Height = 6 X 8 = 48 Square yards

Unshaded Area = Base X Height = 3 X 4 = 12 Square yards

Remaining area = 48 – 12 = 36 square yards

Therefore, Total area = 36 square yards.

Question 9.
Use the perimeter formula, P = 2 × 1 + 2 × w, to find the unknown measure.

A. n = 3 m
B. n = 4 m
C. n = 42 m
D. n = 360 m

A. n = 3 m

Given, perimeter = 30m

From perimeter formula, 2 X (n + 12m) = 30m

n + 12m = 15m

n = 15m – 12m = 3m

Therefore, n = 3m

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