12.3 Surface Area of Cones & Pyramids

What is the exact total surface area of the cone?

• $SA=\left(3\pi+9\pi\sqrt{2}\ \right)units^2$

• $SA=9\pi\sqrt{2}units^2$

• $SA=\left(9\pi+27\pi\sqrt{2}\right)units^2$

• $SA=\left(9\pi+9\pi\sqrt{2}\right)\ units^2$

What is the lateral area?

• 449.88 mi²

• 1704 mi²

• 650.94 mi²

• 899.75 mi²

Tags

CCSS.HSG.GMD.A.1

CCSS.HSG.MG.A.1

A paper party hat, like the one shown, has a slant height of 6 inches and a height of 5 inches. How many square feet of cardboard would be needed to create this hat?

• 62.5 in.²
• 10 in.²
• 50 in.²
• 22.5 in.²

Tags

CCSS.7.G.B.6

Find the surface area of the cone. Leave your answer in terms of pi.

• 12π m²

• 16π m²

• 24π m²

• 8π m²

Tags

CCSS.7.G.B.6

Find the surface area

• 1276.3m²

• 824.7m²

• 1649.3m²

• 3534.3m²

Tags

CCSS.8.G.C.9

Sketch the solid that can be created from the net. Label the dimensions.

• 
• 
• 
• 

Tags

CCSS.6.G.A.4

Find the total surface area in terms of  $\pi$ .  Round to the nearest whole number  $\$  

• A

• B

• C

• D

Find the lateral surface area. Round to the nearest hundredths.

• A

• B

• C

• D

Find the total surface area of the composite figure. Write your answer in terms of  $\pi.$  

•  $48\pi\ in^2$  

•  $42\pi\ in^2$  

•  $46\pi\ in^2$  

•  $38\pi\ in^2$  

Which of the following is  the slant height of the pyramid. CHECK ALL THAT APPLY.

•  $17.720\ ft.$  

•  $\sqrt{314\ }ft.$  

•  $\sqrt{389\ }ft.$  

•    $19.723\ ft.\$  

•  $5\sqrt{12.56}ft.$  

Tags

CCSS.HSG.SRT.C.8