This handy Spectrum Math Grade 4 Answer Key Chapter 7 Lesson 7.10 Measuring Area provides detailed answers for the workbook questions.
Spectrum Math Grade 4 Chapter 7 Lesson 7.10 Measuring Area Answers Key
Area is the amount of space a shape covers. To find the area of a square or rectangle, multiply length by width.
Area = 100 ft. × 20 ft. = 2,000 sq. ft.
Find the area of each shape.
Question 1.
a.
____________ sq. in.
Answer:
180 sq. in
Explanation:
Given,
Length of the rectangle = 12 in.
Width of the rectangle = 15 in.
Area of the rectangle = 12 × 15 = 180 sq. in
b.
_____________ sq. mm
Answer:
144 sq. mm
Explanation:
Given,
Side of the square = 12 mm
Area of the square = S × S
= 12 × 12
= 144 sq. mm.
c.
_____________ sq. ft.
Answer:
132 sq ft.
Explanation:
Given,
Length of the rectangle = 12 ft
Width of the rectangle = 11 ft
Area = L × W
= 12 × 11
= 132 sq ft.
Question 2.
a.
_____________ sq. yd.
Answer:
250 sq. yd
Explanation:
Given,
Length of the rectangle = 25 yd
Width of the rectangle = 10 yd
Area = L × W
= 25 × 10
= 250 sq. yd
b.
______________ sq. in.
Answer:
40 sq. in.
Explanation:
Given,
Length of the rectangle = 8 in
Width of the rectangle = 5 in
Area of the rectangle = 8 × 5
= 40 sq. in.
c.
______________ sq. m
Answer:
480 sq. m
Explanation:
Given,
Length of the rectangle = 40 m
Width of the rectangle = 12 m
Area of the rectangle = L × W
= 40 × 12
= 480 sq. m
Question 3.
a.
_______________ sq. yd.
Answer:
184 sq. yd.
Explanation:
Given,
Length = 23 yd
Width = 8 yd
Area of the rectangle = l × w
= 23 × 8
= 184 sq. yd
b.
______________ sq. km
Answer:
80 sq. km
Explanation:
Given,
Length = 20 km
Width = 4 km
Area of the rectangle = L × W
= 20 × 4
= 80 sq. km