Question

Plz help will Medal and fan
What is the lateral area of the rectangular prism? Assume the prism is resting on its base.



A.
200 in2

B.
180 in2

C.
90 in2

D.
50 in 20
http://lv.k12.com/mediaFiles/Ninth_Grade/Math/Unit17866/Lesson69400/VHS_PA_S2_05_L210_L310_LQ_Q2.gif

Answer 1

Do you know what the lateral surface area means?

Answer 2

nope

Answer 3

Its the area of the rectangles (those at the sides/not the top and bottom)

Answer 4

So just add the surface area of all four rectangles~

Answer 5

don't I have to multiply somewhere

Answer 6

Yes. The area of the rectangle is base times height, remember? :)

Answer 7

oh yea duh ok so after I multiply I just add?

Answer 8

Yea. Try writing it out so that I can check :D

Answer 9

ok

Answer 10

so the lateral area of this rectangular prism you get than you calcule area of these sides
there are two same wides and two same sides
area of sides with l=10 and width 5 have area =10*5=50
area of sides with l=10 and width 4 have area =10*4=40

but there are 2 from sides with area 50 and two from sides with area 40

so lateral area will be 2*50+2*40= ?

Answer 11

180?

Answer 12

@jhonyy9

Answer 13

Yep :)