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8th Grade MathChapter 7b Review
Chapter 7b Review
1) Are the following numbers perfect squares?
a) 81
b) 75
c) 1
1) Are the following numbers perfect squares?
a) 81
b) 75
c) 1
Chapter 7b ReviewAnswer
yes
no
yes
Chapter 7b Review
2) Round to the nearest hundredth.
a) √75
b) √36/49
2) Round to the nearest hundredth.
a) √75
b) √36/49
Chapter 7b ReviewAnswer
≈ 8.66
= 6/7 ≈ 0.86
Chapter 7b Review
3)
a) Give both the principal and negative square roots of 16.
b) A square has an area of 64 ft2. What is the length of each side?
3)
a) Give both the principal and negative square roots of 16.
b) A square has an area of 64 ft2. What is the length of each side?
Chapter 7b ReviewAnswer
4
8 ft
Chapter 7b Review
4)
a) Write the Pythagorean Theorem formula.
b) Find the length of the missing side.
10
8
x
4)
a) Write the Pythagorean Theorem formula.
b) Find the length of the missing side.
Chapter 7b ReviewAnswer
a2 + b2 = c2
x = 12.8
10
8
x
Chapter 7b Review
5)
a) Find the length of the missing side.
15
12
y
5)
a) Find the length of the missing side.
Chapter 7b ReviewAnswer
y = 9
15
12
y
Chapter 7b Review
6) A tower needs stabilizing wires. The tower is 100 ft tall. The wires will be attached at the top of the tower and 40 ft from the base. How long does the wire need to be?
wire
100 feet
40 feet
6) A tower needs stabilizing wires. The tower is 100 ft tall. The wires will be attached at the top of the tower and 40 ft from the base. How long does the wire need to be?
Chapter 7b ReviewAnswer
wire = 107.7 feet
wire
100 feet
40 feet
