Question
Two numbers M and N are in the ratio 8:11 respectively.
If 32 is added to M, the result becomes 80% of N. Find the square of the difference between M and N.Solution
Let M and N be 8x and 11x respectively
ATQ:
8x + 32 = (80/100) × 11x
8x + 32 = 8.8x
8.8x - 8x = 32
0.8x = 32
x = 40 So, M = 8 × 40 = 320
N = 11 × 40 = 440
Difference = 440 - 320 = 120
Required number = 120² = 14400
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 7776Ï€ cm3 inside it. Â
The radius of a hemisphere is 10 cm. What is the total surface area of the hemisphere (including the base)?
The perimeter of a square field is 18 cm more than the perimeter of a rectangle. The length of the rectangle is 77 cm which is 350% of its width. If a s...
The circumference of a circle is given as 220 m. What is the area of the circle? [Use π = 22/7]
In a rectangular floor of length and breadth of 22 metres and 16 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the c...
If the area of a square field is 441 m2, then find the diagonal of the square field.
A well with 42 m inside diameter is dug 14 m deep. Soil taken out of it has been evenly spread all around it to a width of 21 m to form an embankment. F...
A cuboid has length 6 cm, breadth 5 cm and height 4 cm. What is its volume?
The side of a square is equal to the perimeter of an equilateral triangle of area 196√3 cm2 . Find the area of the square?Â
Perimeter of a square is equal to perimeter of a rectangle, if area of square is 729 sq.cm and length of rectangle is two times that of breath. Find the...
Relevant for Exams:
