The paint in a certain container is sufficient to paint an area equal to `9.375m^(2).` How many bricks of dimensions `22.5cmxx10cmxx7.5cm` can be painted out of this countainer ?
How many silver coins, 1.75cm in diameter and thickness 2mm, must be melted to from a cuboid of dimensions 5.5cmxx10cmxx3.5cm ?
A cylinderical container with radius of its base 21 cm has sufficient water to submerge a rectangular solid of dimensions 22cmxx14cmxx10.5cm . Find the rise in the water level when the solid is fully submerged.
How many shots having diameter 3 cm can be made from a cuboidal lead solid of dimension 9cmxx10cmxx12cm ?
A wooden box open at the top has its outer dimensions 2.5cmxx9cmxx10cm and its thickness is 0.5 cm. find the volume of wood used.
Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions 25cmxx20xx5cm and the smaller of dimensions 15 cmxx12xx5cm. For all the overlaps, 5% of the total surface area is required extra. If the cost of the cardboard is Rs 4 for 1000cm^(2) , find the cost of cardboard required for supplying 250 boxes of each kind.
A cistern , internally measuring 150cm xx120mxx110cn has 129600cm^(3) of water in it .porous bricks are placed in the water until the cistern is full to the brim . Each brick absorbs one - seventeenth of its own volume of water . How many bricks can be put in without overflowing the water , each brick being 22.5 cm xx7.5cmxx6.5cm ?
From a cuboidal block of dimensions 15cmxx10cmxx5cm , a cylinderical hole of diameter 7 cm is drilled out. Find the surface area of the remaining block.
Rukshar painted the outside of thr cabinet of measure 1m xx 2m xx 1.5m .How much surface area did she cover if she painted all expect the bottom of the cabinet?
SUBHASH PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE 13.9
