Exploring Surface Area and Volume of Spheres

What is the formula for the surface area of a sphere?

• 2πr^3

• 2πr^2

• 4πr^2

• πr^2

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

How do you calculate the volume of a sphere?

• 4/3πr^3

• 2/3πr^3

• πr^3

• 4πr^3

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

If the radius of a sphere is 3.6 cm, what is its approximate surface area using π approximated as 3.14?

• 195.3 cm^2

• 180.4 cm^2

• 152.8 cm^2

• 166.8 cm^2

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the volume of a sphere with a radius of 3.6 cm using π approximated as 3.14?

• 180.6 cm^3

• 205.2 cm^3

• 195.3 cm^3

• 214.4 cm^3

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What adjustment is made to the surface area formula when dealing with a hemisphere?

• Multiply by 1/2

• Add πr^2

• Subtract πr^2

• No adjustment needed

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the formula for the volume of a hemisphere?

• πr^3

• 4/3πr^3

• 3/2πr^3

• 2/3πr^3

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

How is the surface area of a hemisphere calculated?

• 4πr^2 - πr^2

• 2πr^2

• 2πr^2 + πr^2

• 3πr^2

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

If a company has 76,302 cm^3 of wax, how many spherical candles with a volume of 3052.08 cm^3 can be made?

• 20 candles

• 15 candles

• 25 candles

• 30 candles

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the volume of a sphere with a radius of 9 cm using π approximated as 3.14?

• 2763.12 cm^3

• 2890.32 cm^3

• 3214.56 cm^3

• 3052.08 cm^3

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the cost of a spherical wax candle if the volume is 1766.25 in^3 and the cost is 12 cents per in^3?

• $213.55

• $210.75

• $212.35

• $211.95

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3