Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions for Mathematics

If principal = Rs 1,00,000, rate of interest = 10% compounded half yearly. Find

1. Interest for 6 months.
2. Amount after 6 months.
3. Interest for next 6 months.
4. Amount after one year.

If principal = Rs 1,00,000. rate of interest = 10% compounded half yearly. Find amount after 6 months.

If principal = Rs 1,00,000. rate of interest = 10% compounded half yearly. Find interest for next 6 months.

If principal = Rs 1,00,000. rate of interest = 10% compounded half-yearly. Find amount after one year.

Rahim borrowed Rs 10,24,000 from a bank for one year. If the bank charges interest of 5% per annum, compounded half-yearly, what amount will he have to pay after the given time period. Also, find the interest paid by him.

The surface area of the three coterminus faces of a cuboid are 6, 15 and 10 cm² respectively. The volume of the cuboid is ______.

How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge?

A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood is ______.

Ramesh has three containers.

1. Cylindrical container A having radius r and height h,
2. Cylindrical container B having radius 2r and height 1/2 h, and
3. Cuboidal container C having dimensions r × r × h

The arrangement of the containers in the increasing order of their volumes is

A carpenter makes a box which has a volume of 13,400 cm³. The base has an area of 670 cm². What is the height of the box?

A truck carrying 7.8 m³ concrete arrives at a job site. A platform of width 5 m and height 2 m is being contructed at the site. Find the length of the platform, constructed from the amount of concrete on the truck?

A swimming pool is 200 m by 50 m and has an average depth of 2 m. By the end of a summer day, the water level drops by 2 cm. How many cubic metres of water is lost on the day?

How many bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 11 m long, 3.5 m high and 40 cm thick, if the cement and sand used in the construction occupy (1/10)^th part of the wall?

A birthday cake has two tiers as shown in the figure below. Find the volume of the cake.

Water flows from a tank with a rectangular base measuring 80 cm by 70 cm into another tank with a square base of side 60 cm. If the water in the first tank is 45 cm deep, how deep will it be in the second tank?

The relation between dependent and independent variables is shown through a ______.

The following figure RUNS is parallelogram. Find x and y. (Lengths are in cm) 

Draw a rough figure of a quadrilateral that is not a parallelogram but has exactly two opposite angles of equal measure.

All rhombuses are parallelograms.

Name the quadrilaterals whose diagonals are perpendicular bisectors of each other