Answer:
....area = 468cm²
A = 2L*w + 2Lh + 2wh.
The ratio between the length, width and height of a cubic solid is 4:3:2.
length =4x
width =3x
height = 2x
Area = 2*4x*3x + 2*4x*2x + 2*2x*3x
Area = 24x²+16x²+12x²
Area = 52x²
Area = 468cm²
x²= 468/52=9
x= V9 = 3 or -3 (an e ling is never negative, x=3cm)
length =4x=12cm
width =3x= 9cm
height = 2x = 6cm
check the area :
2(12*9 + 12*6 + 9*6)=468cm²
Volume = length*width*height
V = 12*9*6=648cm^3
Explanation: