Question

What is the lateral area of a cone whose radius is 5 cm and whose slant height is 13 cm? Use 3.14 for .

Answer 1

@some_someone

Answer 2

you know the surface area formula of a cone

Answer 3

no

Answer 4

the formula is \[SA = πr2 + πrl \] you know what r is and you know what the slant height is

all you have to do now is plug all the givens into the formula

Answer 5

5 and 13

Answer 6

188.4 cm2

Answer 7

it should be r^2 for the 1st r in the formula only.

Answer 8

make sure you convert cm to m

Answer 9

nvm just leave it in cm^2

Answer 10

204.1 cm2

Answer 11

hmmm no you should have \[\pi(5)^2+(\pi)(5)(13)=282.74cm^2\]

Answer 12

thats not even an option

Answer 13

..write down the options

Answer 14

53.4 cm2
188.4 cm2
204.1 cm2
378.6 cm2

Answer 15

its the 2nd one

Answer 16

you were right the 1st time i just had my units wrong