Aright cone has a radius of 13 cm and an altitude of 52 cm. find its surface area.

a. 2,668.7 cm2

b. 865.8 cm2

c. 849.5 cm2

d. 2,720.0 cm2

Skip to content# Aright cone has a radius of 13 cm and an altitude of 52 cm. find its surface area. a. 2,668.7 cm2 b.

Mathematics ##
Comments (4) on “Aright cone has a radius of 13 cm and an altitude of 52 cm. find its surface area. a. 2,668.7 cm2 b.”

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a. 2,668.7 cm2

b. 865.8 cm2

c. 849.5 cm2

d. 2,720.0 cm2

7. 4/5 10. 244

Step-by-step explanation:

7. There are 25 Jolly Ranchers 20 of which are no blue raspberry

So: 20/25= 4/5

4/5

10. Formula for Surface Area: 2lw+ 2lh+ 2wh

Plug it into the formula

7x12=84 84x2= 168

7x2= 14 14x2 = 28

12x2=24 24x2=48

Add it up!

168+28+48= 244

Hope this helps!! 😀

#1 4/5 #10 244

Step-by-step explanation:

#1. 4 + 5 +13 + 3 find the total number of candy = 25

without blue-raspberry there would be 20 pieces of candy. The ratio would be 20/25 simplify to 4/5.

#10. find the area of each face then add them up.

2(7*12) + 2(12*2) + 2(7*2) = 244

Option B. [tex]865.8\pi\ cm^{2}[/tex]

Step-by-step explanation:

we know that

The surface area of the cone is equal to

[tex]SA=\pi r^{2} +\pi rl[/tex]

we have

[tex]r=13\ cm[/tex]

[tex]h=52\ cm[/tex]

Find the slant height l

Applying Pythagoras \theorem

[tex]l^{2}=r^{2} +h^{2}[/tex]

substitute the values

[tex]l^{2}=13^{2} +52^{2}[/tex]

[tex]l^{2}=2,873[/tex]

[tex]l=53.6\ cm[/tex]

Find the surface area

[tex]SA=\pi(13)^{2} +\pi(13)(53.6)=865.8\pi\ cm^{2}[/tex]

Surface area:740.32m volume:586.67in