Shanti Sweets Stall was placing an order for making cardboard boxes for paking their sweets. Two sizes of boxes were required. The bigger of dimensions 25 cm by 20 cm by 5 cm and the smaller of dimensions 15 cm by 12 cm by 5 cm. 5% of the total surface area is required extra, for all the overlaps. If the cost of the cardboard is Rs 4 for 1000 `cm^2`, find the cost of cardboard required for supplying 250 boxes of each kind.
A cuboidal oil tin is 50 cm by 30 cm by 40 cm.Find the cost of the tin required for making 20 such tins.If the cost of tin sheet is Rs. 20 per square metre.
The dimensions of a rectangles are 5 cm and 4 cm: Find their areas.
If two cubes of dimensions 2 cm by 2cm by 2cm are placed side by side, what would the dimensions of the resulting cuboid be?
Find the surface are of the cuboid whose dimensions are 40 cm xx 25 cm xx 8 cm.
The total surface area of a cylinder is 40pi cm^2 . If its height is 5.5 cm then its base radius is :
Diagram of the adjacent picture frame has outer dimensions 24 cm xx 28 cm and inner dimensions 16 cm xx 20 cm .Find the area of each section of the frame ,if the width of each section is same.
Find the surface area of the sphere of radius: 5 cm?
NAND LAL PUBLICATION-SURFACE AREAS AND VOLUMES-Exercise 13.9
