Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions

Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`) 

21 cm

If the circumference of a circular sheet is 154 m, find its radius. Also find the area of

the sheet. (Take `pi = 22/7`)

A gardener wants to fence a circular garden of diameter 21 m. Find the length of the rope he needs to purchase, if he makes 2 rounds of fence. Also find the costs of the rope, if it cost ₹ 4 per meter. (Take `pi = 22/7`)

From a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. Find the area of the remaining sheet. (Take π = 3.14)

Saima wants to put a lace on the edge of a circular table cover of diameter 1.5 m. Find the length of the lace required and also find its cost if one meter of the lace costs ₹ 15. (Take π = 3.14)

Shazli took a wire of length 44 cm and bent it into the shape of a circle. Find the radius of that circle. Also find its area. If the same wire is bent into the shape of a square, what will be the length of each of its sides? Which figure encloses more area, the circle or the square? (Take `pi = 22/7`)

Find the circumference of the inner and the outer circles, shown in the adjoining figure? (Take π = 3.14)

How many times a wheel of radius 28 cm must rotate to go 352 m? (Take `pi = 22/7`)

The minute hand of a circular clock is 15 cm long. How far does the tip of the minute hand move in 1 hour. (Take π = 3.14)

The population of a city decreased from 25,000 to 24,500. Find the percentage decrease.

Arun bought a car for ₹ 3,50,000. The next year, the price went upto ₹ 3,70,000. What was the percentage of price increase?

A school team won 6 games this year against 4 games won last year. What is the percent increase

The number of illiterate persons in a country decreased from 150 lakhs to 100 lakhs in 10 years. What is the percentage of decrease?

What is the circumference of a circle of diameter 10 cm (Take π = 3.14)?

Find the perimeter of the given shape (Take π = `22/7`).

Sudhanshu divides a circular disc of radius 7 cm in two equal parts. What is the perimeter of each semicircular shape disc? (Use π = `22/7`)

Circumference of a circle is always ______.

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (–2) marks are awarded for every incorrect answer and 0 for questions not attempted.

Reshma gets five correct answers and five incorrect answers, what is her score?

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (− 2) marks are awarded for every incorrect answer and 0 for questions not attempted.

Heena gets two correct and five incorrect answers out of seven questions she attempts. What is her score?

(– 11) × 7 is not equal to ______.