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

Construct a parallelogram ABCD in which AB = 4 cm, BC = 5 cm and ∠B = 60°.

Construct a parallelogram HOME with HO = 6 cm, HE = 4 cm and OE = 3 cm.

Construct a parallelogram when one of its side is 4 cm and its two diagonals are 5.6 cm and 7 cm. Measure the other side.

Multiply the following:

b³, 3b², 7ab⁵ 

Ashima took a loan of Rs 1,00,000 at 12% p.a. compounded half-yearly. She paid Rs 1,12,360. If (1.06)² is equal to 1.1236, then the period for which she took the loan is ______.

For calculation of interest compounded half yearly, keeping the principal same, which one of the following is true?

Amount when interest is compounded annually is given by the formula ______.

When principal P is compounded semi-annually at r % per annum for t years, then amount ______.

The compound interest on Rs 8,000 for one year at 16% p.a. compounded half yearly is ______, given that (1.08)² = 1.1664.

If amount on the principal of Rs 6,000 is written as `6000 [1 + 5/100]^3` and compound interest payable half yearly, then rate of interest p.a. is ______ and time in years is ______.

The compound interest on a sum of Rs P for T years at R% per annum compounded annually is given by the formula `P(1 + R/100)`.

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