Question

A prism has a surface area of 176 cm2.

What is the surface area of a scaled image with a scale factor of 1 half?

Answer 1

what is the formula 4 scale factor??

Answer 2

you can use an easy type of prism, which will have surf area :2(ab+ac+bc), where a, b,c are its height, length and width. In scaled image u will have 2(0.5a*0.5b+0.5a*0.5c+0.5b*0.5c) count this and see in what ratio is new surf area is smaller than in original figure

Answer 3

there is no exact formula

Answer 4

what do u use 4 this?

Answer 5

hi?

Answer 6

if u have a rectangular prism, its surface area will be counted as: (a-width, b-length, c-height)
A=2(ab+bc+ac)
now, u have an image with sides 0.5a, 0.5b and 0.5c. the surf area of scaled image will be
2(0.25ab+0.25ac+0.25bc). Now divide second A by first A.
you will get 0.25 as the ratio.

Answer 7

second figure has surface area 4 times smaller than original has

Answer 8

what is A= to?

Answer 9

u there??

Answer 10

a is surface area. just divide 176 by 4.

Answer 11

and get your answer

Answer 12

ok thank u

Answer 13

also if i'm away you can tag me by @AlexandervonHumboldt2
like @Kiki_F

Answer 14

thanks i will