Question

Refer to the right trapezoidal prism.

A. What is the surface area of the right trapezoidal prism?Hint: It is turned on its side.

B. What is the volume of the right trapezoidal prism?

Answer 1

prism

Answer 2

can u spot the trapezoid in the pic ?

Answer 3

No, I don't think I can.

Answer 4

35 looks kind of like that but I'm really not sure

Answer 5

trapezoid looks like that, these problems, we start with spotting the base(trapezoid) in the pic.

Answer 6

yes thats the trap !

Answer 7

left side and right side you have traps in the pic, look again

Answer 8

ooh I see them

Answer 9

now what?

Answer 10

here is the steps for finding surface area :-
1. find perimeter of the base (trap here)
2. multiply it with the height to get Lateral Area
3. add it to 2*(area of base)

Answer 11

look at the pic and see if u can figure out permineter of trap

Answer 12

for both?

Answer 13

lets find perimeter of one base first

Answer 14

Okay I don't think I know the formula for it .

Answer 15

perimeter you dont need formula

Answer 16

perimeter = length around a shape

Answer 17

just add all the lengths of the shape, that gives perimeter

Answer 18

oho kay

Answer 19

for that trap above, perimeter would be 1+2+3+4 = 10

Answer 20

similarly find the perimeter for the base of prism in the pic..

Answer 21

84?

Answer 22

thats right !

Answer 23

multiply it wid height of the prism

Answer 24

that gives Latera Area, we will be done with step2.

Answer 25

height = distance between the two bases

Answer 26

here, the two traps are on left and right
so, height = distance between them = ?

Answer 27

@Joshuam1 still wid me ? :)

Answer 28

yes just writing things down

Answer 29

okay

Answer 30

so 84 x 40?

Answer 31

thats right !

Answer 32

3360

Answer 33

so thats the Lateral Area.
lets find area of base, and add it to the Lateral Area to get the full surface area.

Answer 34

do u knw how to calculate area of a trap ?

Answer 35

no