Question

The lower part of a toy is right circular cylindrical and its upper part is conical diameter of its base is 8 cm and height of cylindrical part is 5 cm if the total height of the toy is 8 cm find the area of the curved surface and its volume takeThe lower part of a toy is right circular cylindrical and its upper part is conical diameter of its base is 8 cm and height of cylindrical part is 5 cm if the total height of the toy is 8 cm find the area of the curved surface and its volume take

Answer 1

Step-by-step explanation:

Volume of each cube = 64 cm3

∴ Total volume of the two cubes = 2 × 64 cm3

= 128 cm3

Let the edge of each cube = x

∴ x3 = 64 = 43

∴ x = 4 cm

Now, Length of the resulting cuboid l = 2x cm

Breadth of the resulting cuboid b = x cm

Height of the resulting cuboid h = x cm

∴ Surface area of the cuboid = 2 (lb + bh + hl) = 2[(2x . x) + (x . x) + (x . 2x)]

= 2[(2 × 4 × 4) + (4 × 4) + (4 × 2 × 4)] cm2

= 2 [32 + 16 + 32] cm2 = 2[80] cm2 = 160

Answer 2

Answer:

solved

Step-by-step explanation:

the area of the curved surface = 8π(5+5/2) = 60π cm²

volume = 16π(5 + 1) =  96π cm³