Question

The surface area of a rectangular prism is 108 centimeters squared. The length is 10 centimeters, and the width is 1 foot. What is the height of the prism?

Answer 1

you have got mixed units there - centimeters and feet
are you sure that is correct?

Answer 2

Let me check

Answer 3

16 centimeters
4.4 centimeters
4 centimeters
5.8 centimeters

Answer 4

the width cant be 1 foot because 1 foot = about 30 cms so that would make the area of the base = about 300 cm2 and total surface area = 10 8

Answer 5

i think thw width might be 1 cm

Answer 6

any other possible answers?

Answer 7

lets assume width = 1 cm
we have the diagram

Answer 8

4.4 is not the right answer btw

Answer 9

the total surface area
= 2 * area of the base + 2 * 10*x + 2 * 1* x
= 2*10 + 20x + 2x

and the question says this equals 108 cm2

so we have the equation

20 + 20x + 2x = 108

22x + 20 = 108

solve this for x

Answer 10

( x is the height of the prism)

Answer 11

do you follow the above reasoning?

Answer 12

would you subtract 20 from 20 and 108 - 20 = ? and then divide 22x into what answer you got

Answer 13

subtract 20 from both sides
then divide by 22

Answer 14

22x = 86

Answer 15

86???

Answer 16

108 - 20 = ?

Answer 17

88

Answer 18

right so
22x = 88
all you need to do now is divide 88 by 22

Answer 19

hi hi hi hi hi hi hi hi

Answer 20

x = 25

Answer 21

the answer was 7??

Answer 22

???
88 / 22 = 4

Answer 23

sounds like you are doing an online test..

Answer 24

oops, divided wrong.

Answer 25

its a lesson

Answer 26

if 1 foot is really 1 cm the answer is 4 cm.

Answer 27

i divided wrong

Answer 28

gotta go right now

Answer 29

ok