Pi (π) is a:
a. range
b. ratio
c. formula
a ratio
True or False
You must take a cube root to find the volume of a cylinder
FALSE
True or False
You must divide the formula for a cylinder by 3 to get the volume of a cone
True!
True or False:
A sphere is a polyhedron
FALSE!
It has not vertices or edges therefore it is not a polyhedron
Find the EXACT volume of this cylinder: (must show units to get credit)
r = 3 m
h = 5 m
V = 45π m3
What is the closest numeric, fractional equivalent to pi?
(Write π as a fraction)
22/7
What is the formula to find the volume of a cylinder?
V = π r2 h
What is the formula to find the volume of a cone?
V = (π r2 h) / 3
Find the EXACT volume of a sphere with a radius of 15cm.
(Must include units to get credit)
V = 4500π cm3
Find the EXACT AREA of a circle that has a radius of 6cm.
(Must show units to get credit)
A = 36π cm2
Pi is numerically simplified to...
(π = ____)
π = 3.14
3.14159
What is the EXACT volume of this cylinder? (Must show units to get credit)
radius = 2 m
height = 12 m
V = 48π m3
What is the ROUNDED volume of this cone? (Must show units to get credit)
radius = 5 m
height = 13 m
V β 340.167π m3
Find the ROUNDED volume of a sphere with a diameter of 32 cm. (Must include units to get credit)
V β 17,148.59 cm3
Find the ROUNDED CIRCUMFERENCE of a circle that has a radius of 7m.
(must include units to get credit)
C = 2πr
C β 43.96 m2
What is the formula to find π?
π = circumference / diameter
What is the ROUNDED volume of this cylinder? (Must show units to get credit)
radius = 5 cm
height = 16 cm
V β 1256 cm3
What is the ROUNDED volume of this cone?
(Must show units to get credit)
d = 16 cm
h = 12 cm
803.84 cm3
What is the ROUNDED volume of a sphere with a radius of 17 cm? (Must show units to get credit)
V β 20569.09 cm3
What is the rounded volume of a sphere with a diameter of 28 cm?
(must show units to get credit)
V β 11488.21 cm2
True or False
There are imaginary numbers used in mathematics
TRUE!
Square root of a negative number is imaginary and notated with the symbol i
What is the EXACT volume of a cylinder that has:
diameter = 8m
height = 9m
(Must show units to get credit)
V = 144π m3
What is the EXACT volume of this cone? (Must show units to get credit)
h = 24 cm
d = 14 cm
V = 392π cm3
What is the ROUNDED volume of a sphere that has a diameter of 23 cm?
(Must include units to get credit)
V β 6367.4 cm3
What is the AREA of a triangle that is 18 in. in height and 20 in. in width?
A = 180 in.2