Cuboid

Q. An open box of length 1.5 m, breadth 1 m, and height 1 m is to be made for use on a trolley for carrying garden waste. How much sheet metal will be required to make this box ? The inside and outside surface of the box is to be painted with rust proof paint. At a rate of 150 rupees per sqm, how much will it cost to paint the box?

Q. A rectangular courtyard is $18$ m $72$ cm long and $13$ m $20$ cm broad. It is to be paved with square tiles of the same size. Find the least possible number of such tiles.

Q. Find the total surface area of a cube having each of its side equal to 3.5 cm.

Q.

How many faces does figure have?

Q.

How many faces does figure have?

Q.

Which of the following statements are true ?

(i) All cubes are cuboids.

(ii) All cuboids are cubes.

(iii) A cube has 6 faces, 8 corners, 12 edges.

(iv) A cube has 8 faces, 12 corners and 6 edges.

1. (i) and (iii)

2. (i) and (iv)

3. (ii) and (iv)

4. (i)

Q. From a rectangular sheet of 20 m x 10 m, 4 squares of side 2.5 m are cut out from the corners and made into a box. Find the TSA of the open cuboid so formed.

Q. An oil tin in the shape of a cuboid has dimensions, 26 cm x 26 cm x 45 cm . If 1 sq. m sheet costs ₹10 , then find the total cost for making 20 such tins.

Q. An open cuboidal box has dimensions $25cm\times 10cm\times 25cm$. Find the cost of painting the box from outside if the painting cost is ₹ $2/c{m}^2$.

Q. An oil tin in the shape of a cuboid has dimensions, 26 cm x 26 cm x 45 cm . If 1 sq. m sheet costs ₹10 , then find the total cost for making 20 such tins.

Q. From a rectangular sheet of 20 m x 10 m, 4 squares of side 2.5 m are cut out from the corners and made into a box. Find the TSA of the open cuboid so formed.

Q. An open cuboidal box has dimensions $25cm\times 10cm\times 25cm$. Find the cost of painting the box from outside if the painting cost is ₹ $2/c{m}^2$.