Question
A rectangle has its sides measuring 32 cm in length and 18
cm in breadth. If the length is increased by 50% and the breadth is reduced by 20%, calculate the perimeter of the new rectangle.Solution
ATQ,
Length of the new rectangle = 1.50 × 32 = 48 cm
Breadth of the new rectangle = 0.80 × 18 = 14.4 cm
Required perimeter = 2 × (48 + 14.4) = 124.8 cm
The base of a triangle is 18 cm and height is 14 cm. The height of another triangle of double the area having the base 21 cm is:
If the side of square and its area is in the ratio of 9:45 then find its perimeter?
The radius of the base of a cone is 6 cm, and its slant height is 10 cm. What is the surface area of the cone?
Steel is used to make a hemispherical bowl that is 0.37 cm thick. The bow's inner radius is 6 cm. Find the bowl's outside curved surface.
- A metal sphere with radius 17.5 cm is melted and molded into small cuboids each of size 7 cm × 5 cm × 5 cm. Determine the number of cuboids formed.
A cuboid has its dimensions in the ratio 2:1:3. If the volume of the cuboid is 3072 cm³, calculate the sum of its dimensions.
Find the coordinates of the points where the graph 57x – 19y = 399 cuts the coordinate axes.
(a) x – axis at (– 7,0) and y – axis at (0, ...
Find the volume of a hemisphere whose radius is 25% smaller than the side length of a square with a perimeter of 160 cm.Â
The volume of cone is 4752 cm3. If its height is 3.5 cm then find the radius of the cone.
A rectangle with a diagonal of length 28m is inscribed in a circle. Find the area of a circle?
