The length breadth and height of a cuboid are in the ratio of 4:2:1 and total surface area is 1372sq m.Find the dimensions of the cuboid
Answers
Answered by
6
let length = 4x
breadth = 2x
heiggt = 1 x
TSA = 1372 sq m.
2 ( lb + bh + hl ) = 1372
2 ( 4x * 2x + 2x * x + x * 4x ) = 1372
2 (8x^2 + 2x^2 + 4x^2 ) = 1372
2 ( 14x^2 ) = 1372
28x^2 = 1372
x^2 = 1372 / 28
x^2 = 49
x = 7
length = 4* 7 = 28m
breadth = 2 * 7 = 14 m
heidht = 1 * 7 = 7m
hope it helps...
please mark as brainlist.....
breadth = 2x
heiggt = 1 x
TSA = 1372 sq m.
2 ( lb + bh + hl ) = 1372
2 ( 4x * 2x + 2x * x + x * 4x ) = 1372
2 (8x^2 + 2x^2 + 4x^2 ) = 1372
2 ( 14x^2 ) = 1372
28x^2 = 1372
x^2 = 1372 / 28
x^2 = 49
x = 7
length = 4* 7 = 28m
breadth = 2 * 7 = 14 m
heidht = 1 * 7 = 7m
hope it helps...
please mark as brainlist.....
Similar questions