Secondary School (English Medium) (5 to 8) Class 7 - CBSE Question Bank Solutions

Find the area of the following triangle:

Find the area of the following triangle:

Find the missing value:

ΔABC is right angled at A (see the given figure). AD is perpendicular to BC. If AB = 5 cm, BC = 13 cm and AC = 12 cm, Find the area of ΔABC. Also find the length of AD.

ΔABC is isosceles with AB = AC = 7.5 cm and BC = 9 cm (see the given figure). The height AD from A to BC, is 6 cm. Find the area of ΔABC. What will be the height from C to AB i.e., CE?

Convert part of the ratio to percentage:

3 : 1

Convert part of the ratio to percentage:

2 : 3 : 5

Convert part of the ratio to percentage:

1 : 4

Convert part of the ratio to percentage:

1 : 2 : 5

Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk.

If in a stick of chalk, carbon is 3g, what is the weight of the chalk stick?

If Rs. 250 is to be divided amongst Ravi, Raju, and Roy so that Ravi gets two parts, Raju three parts, and Roy five parts. How much money will each get? What will it be in percentages?

In a class, the ratio of girls to boys is 3: 7.

(i) What percentage of the total number of students is girls and what percentage of the total number of students is boys?

(ii) If the total number of students is 70, what would be the number of girls and what would be the number of boys in the class?

Find the area of the following triangle:

Find the area of the following triangle:

Find BC, if the area of the triangle ABC is 36 cm² and the height AD is 3 cm.

In ∆PQR, PR = 8 cm, QR = 4 cm and PL = 5 cm.

Find:
(i) the area of the ∆PQR
(ii) QM.

Encircle the odd one of the following.

Encircle the odd one of the following.

If we multiply six negative integers and six positive integers, then the resulting integer is ______.