Rakha has 15 square colour papers of sizes 10cm, 11cm, 12cm… 24 cm. How much area can be decorated with these colour papers?

Amita wants to make rectangular cards measuring 8cm xx 5cm. She has a square chart paper of side 60cm. How many complete cards can she make from this chart? What area of the chart paper will be left?

A fish tank is in the form of a cuboid, external measures of that cuboid are 80 cm times 40 cm times 30 cm . The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed.

Find the area of the traingles whose sides are 11cm,12cm,13cm.

An aquarium is in the form of a cuboid whose external measures are 80cm xx 30cm xx 40cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?

An aquarium is in the form of a cuboid whose external measures are 80 cm X 30 cm X 40 cm . The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?

An aquarium is in the form of a cuboid whose external measures are 80cm xx30cm xx40cm. The base,side faces and back face are to be covered with a coloured paper.Find the area of the paper needed?

A fish tank is in the form of a cuboid,external measures of that cuboid are 80cm xx40cmx30cm. The base,side faces and back face are to be covered with a coloured paper.Find the area of the paper needed

A self help group wants to manufacture joker's caps (conical caps) of 3 cm radius and 4 cm height. If the available colour paper sheet is 1000 cm^(2) , then how many caps can be manufactured from that paper sheet ?