MCQ
How many bricks will be required to construct a wall 8m long, 6m high and 22.5cm thick if each brick measures (25cm × 11.25cm × 6cm)?
- A6400
- B4800
- C5600
- D5200
✓
Answer
- 6400
Solution:
Volume of a cuboid = Length × Breadth × height
1m = 100
Volume of wall = 8m × 6m × 0.225m = 10.8m3
Volume of a brick = 0.25m × 0.1125m × 0.06m = 0.0016875m3
No. of bricks $=\frac{\text{Volume of wall }}{\text{Volume of a brick }}=\frac{10.8}{0.0016875}=6400$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Two steel sheets each of length a1 and breadth a2 are used to prepare the surfaces of two right circular cylinders - one having volume v1 and height a2 and other having volume v2 and height a1. Then:
The area of a right-angled triangle is 20m2 and one of the sides containing the right triangle is 4cm. Then the altitude on the hypotenuse is:
Which of the following is not a solid?
Write the correct answer in the following:
Point (-10, 0) lies:
Point (-10, 0) lies:
If all the three angles of a triangle are equal, then each one of them is equal to:
- 90º
- 45º
- 60º
- 30º
If APB and CQD are 2 parallel lines, then the bisectors of the angles APQ, BPQ, CQP and PQD form, square only if:
If triangle PQR is right angled at Q, then
An exterior angle of a triangle is equal to 100º and two interior opposite angles are equal. Each of these angles is equal to: