Question

Match each shape with its surface area. (Round if necessary)

square pyramid: base length 6 meters, slant height 10 meters

cone: radius 4 meters, slant height 8 meters

square pyramid: base length 5 meters, slant height 11meters

cone: radius 6 meters, slant height 4 meters

A. 188m^2
B. 135m^2
C. 156m^2
D. 151m^2

Answer 1

Do you know formulas for each?

Answer 2

mmmmm yes wait lol

Answer 3

ohhh no i dont sorry i have volume but not surface area so idk

Answer 4

do u know?

Answer 5

Cone:
http://0.tqn.com/d/math/1/0/t/L/conerr.jpg

Answer 6

Pyramid:
http://0.tqn.com/d/math/1/0/H/F/sbpyramidr.gif

Answer 7

SA = s2 + 2 × s × l : pyramid
s=base length
l=slant height just substitute the given value

Answer 8

s^2

Answer 9

SA = 10^2 + 2 x 10 x 6??? Am i right for number 1??

Answer 10

nope 10 is the slant height

Answer 11

SA = s2 + 2 × s × l : pyramid
s=base length
l=slant height just substitute the given value

Answer 12

@Gabylovesyou

Answer 13

ohh

Answer 14

getss??

Answer 15

so then its SA = 6^2 + 2 x 6 x 10

Answer 16

yup xD gaby

Answer 17

156?

Answer 18

yup
\[SA=pi rs +pi r^2\] for cone
r=radius
s=slant height substitute the given values
@Gabylovesyou

Answer 19

for the other square pyramid question is it 135??

Answer 20

yup
xD nice

Answer 21

yaay ok! im going to do the cone now

Answer 22

SA = 3.14 x 4 x 8 + 3.14 x 4^2

Answer 23

am i right?

Answer 24

@traile

Answer 25

yup but it is better if you will use the pi in the calculator

Answer 26

pi = 3.14

Answer 27

yup 3.1416
xD dont forget to use parenthesis

Answer 28

I got 150.72. Since I don't have that i have to round so i get 151??

Answer 29

yup