The edges of a cuboid are in the ratio 1 :2: 3 and its surface area is

1.	The edges of a cuboid are in the ratio 1 :2: 3 and its surface area is 88 cm2. The volume dfthe cuboid is7.
Answer» let sides be x , 2x ,3x so,S.A = 2(lb + bh +lh) 88/2 = (x)(2x) +(2x)(3x) + (x)(3x) 44 = 2x² + 6x² + 3x² 44 = 11x² 44/11 = x² 4 = x² 2 =x now , sides are x = 2 cm (length) 2x = 4 cm (breadth) 3x = 6 cm(height) so, volume= lbh =2x 4x6 = 48 cm³

The edges of a cuboid are in the ratio 1 :2: 3 and its surface area is 88 cm2. The volume dfthe cuboid is7.

Answer»

let sides be x , 2x ,3x so,S.A = 2(lb + bh +lh)

88/2 = (x)(2x) +(2x)(3x) + (x)(3x)

44 = 2x² + 6x² + 3x²

44 = 11x²

44/11 = x²

4 = x²

2 =x

now , sides are x = 2 cm (length) 2x = 4 cm (breadth) 3x = 6 cm(height)

so,

volume= lbh =2x 4x6 = 48 cm³