Do you now answers of 4 Q. -x?ractice Set 47
surface area of cubes has tng the follovs Sides
on S cm -2m ) 0.8m (v) m
total surface area of the cuboids of length. breadth and height as gv.en
cm. cm. 1.4 cm
Y A matchbox is 4 cm long. 2.5 cm broad and I.-S cm in height. Its outer sides are to
co•ered exactly uith craft paper. How much paper Will be required to do so ?
4. An open box of length 1.5 m- breadth I m. and height I m is to be made for use on
trolley for carrying garden waste. How much sheet metal '*ill be required to make this
The inside and outside surface of the box is to be painted with rust proof pant_
At a rate of 150 rupees per sqm, how much will it cost to paint the box?
Maths is fun!
There are some three-digit numbers which can be divided by the product
j of their digits without leaving a remainder.
Example (i) Take the number 175, I
(ii) Take the number 816, 8 x I K 6