if a box has a length 80cm ,breadth 40cm and height 20cm respectively.How many square sheets of paper of side 40cm would be required to cover it?
Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden block covered with coloured paper with picture of Santa Claus on it. She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm and 20 cm respectively. How many square sheets of paper of side 40 cm would she require?
Question 50
Amita wants to make rectangular cards measuring 8 cm×5 cm. She has a square chart paper of side 60 cm. How many complete cards can she make from this chart? What area of the chart paper will be left ?