Question
A copper disc has a hole. If the disc is heated, the
size of the hole -Solution
Whenametalplatewithacircular holeatits centreisheated,definitelyalongwith the areal expansion of the plate the diameter (sum of two radii) of the circular hole also increases.
The cost of fencing a rectangular field at the rate of Rs. 6/metre is Rs. 360. If the length of the field is 11 metres more than its breadth, then find ...
The perimeter of a rhombus is 130 m. If one of its diagonals is 16 m, then the area of the rhombus is
The volume of a hemisphere is 2425 (1/ 2) cm3 . Find its radius (Take p = 22/7)
- If the edge of the cube is increased by 30%, then find the percentage increase in the volume of the cube.
Length of a rectangle is equal to the side of a square. If area of the square and rectangle is 841 m2 and 493 m2, respectively the...
In triangle ABC, the bisector of angle BAC cuts the side BC at D. If AB = 10 cm, and AC = 14 cm then what is BD : BC ?
- A rectangle has a perimeter of 160 cm. Its breadth is 40% less than its length. Calculate the area (in cm²) of a square whose side is 20 cm shorter than t...
The cost of fencing a rectangular field at the rate of Rs. 5/metre is Rs. 350. If the length of the field is 11 metres more than its breadth, then find ...
A tank whose length, width and height are 21 metres, 17 metres and 10 metres respectively is completely filled with juice. If the juice costs Rs.5/m
The outer radius of a hollow metallic spherical ball is 12 cm while the thickness of the metal used to make it is 6 cm. Find the volume of the metal use...
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