Question

A cone-shaped cup has a diameter of 8 cm and a slant height of 7 cm. What is its exact lateral surface area?

Answer 1

@atreyu6s3x6

Answer 2

round two!!! alright so we need the formula for surface area, do you know it?

Answer 3

πr(r+h2+r2)

Answer 4

okay so we plug in our numbers

Answer 5

I'm not good at putting it together

Answer 6

A=πrl+πr2 heres a simpler one

Answer 7

3.14 *8 (8 +7(2)+7(2)

Answer 8

r=4
l=7

Answer 9

lets try the one i jus posted, so we get
A=π(4)(7)+π(4)^2

Answer 10

138.16?

Answer 11

it say thats wrong

Answer 12

i got 138.23

Answer 13

try that

Answer 14

thats wrong too

Answer 15

thats wrong

Answer 16

wow.. is that the exact question?

Answer 17

put it in cm2

Answer 18

at the end of the answer its cm2

Answer 19

@Ms-Brains hey come and try this...

Answer 20

well that wouldnt really change anything, its only the area units

Answer 21

try 904.32 @caitlyn10

Answer 22

nope thats not it either...

Answer 23

okay lets try your equation, πr(r+h^2+r^2) correct?

Answer 24

yes

Answer 25

pi*4 (4+7^2+4^2)

Answer 26

867.07?

Answer 27

no.....

Answer 28

woooowww...... uhh could you take a picture of the problem?

Answer 29

yes

Answer 30

Hey guys! so what's the problem?

Answer 31

87.9646 cm2 try that @caitlyn10

Answer 32

thats it, thank you

Answer 33

nice! haha @caitlyn10 @Ms-Brains nevermind we got it haha,

Answer 34

http://www.calculatorsoup.com/

This might be able to help you in the future @caitlyn10

Answer 35

Haha alright. bye guys

Answer 36

cheater xD @Ms-Brains

Answer 37

thank you, want to help me with more?

Answer 38

i actually have to go to class in a bit so ill see you guys later, if you need help ill be back on at 5