Question

the edges of a rectangular sold have lengths 2x, 3x and 5x. what is the total surface area of the solid?

30x^2
60x^2
62x62
30x^3

Answer 1

@Pixel

Answer 2

sold?

Answer 3

oh wait solid

Answer 4

solid**

Answer 5

is the 62x62 supposed to be 62^2?

Answer 6

im pretty sure its supposed to be 62x^2

Answer 7

We have 6 faces with three different rectangular areas being doubled so we have

2 [ (2x * 3x) + (2x * 5x) + (3x * 5x)] =

2 [ 6x2 + 10x2 + 15x2 ] =

2 [ 31x2 ] =

62x^2

Answer 8

Tysm could you help with a few more Ill just post if I need help?

Answer 9

yah

Answer 10

sweet!