Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Length of the cuboid, l = 2.5 cm
Breadth of the cuboid, b = 2 m
Height of the cuboid, h = 2.4 m
The total surface area of the cuboid
= 2(l × b + b × h + l × h)
= 2(2.5 × 2 + 2 × 2.4 + 2.5 × 2.4)
= 2(5 + 4.8 + 6)
= 2 × 15.8
= 31.6 sq.m.
संबंधित प्रश्न
A wooden bookshelf has external dimensions as follows: Height = 110 cm, Depth = 25 cm, Breadth = 85 cm in following figure. The thickness of the plank is 5 cm everywhere. The external faces are to be polished and the inner faces are to be painted. If the rate of polishing is 20 paise per cm2 and the rate of painting is 10 paise per cm2. Find the total expenses required for polishing and painting the surface of the bookshelf.

How many planks each of which is 3 m long, 15 cm broad and 5 cm thick can be prepared from a wooden block 6 m long, 75 cm broad and 45 cm thick?
A solid rectangular piece of iron measures 6 m by 6 cm by 2 cm. Find the weight of this piece, if 1 cm3 of iron weighs 8 gm.
The dimensions of a cuboid are in the ratio 5 : 3 : 1 and its total surface area is 414 m2. Find the dimensions.
The volume of a cube whose surface area is 96 cm2, is
If A1, A2, and A3 denote the areas of three adjacent faces of a cuboid, then its volume is
A solid cuboid of metal has dimensions 24 cm, 18 cm, and 4 cm. Find its volume.
The dimension of a class-room are; length = 15 m, breadth = 12 m and height = 7.5 m. Find, how many children can be accommodated in this class-room; assuming 3.6 m3 of air is needed for each child.
The capacity of a rectangular tank is 5.2 m3 and the area of its base is 2.6 x 104 cm2; find its height (depth).
A rectangular sheet of dimensions 25 cm × 7 cm is rotated about its longer side. Find the volume and the whole surface area of the solid thus generated.
