Question
A metal wire when bent in the form of a square encloses
an area 1089 cm 2 , if the same wire is bent in the form of a circle, then its area is?Solution
Area of square = 1089 cm² = a 2 so a = 33 cm & square is bent in form of a circle , so perimeter of square will be equal to circumference of the circle . It means , 2πR = 4a or 2 × 22/7 × R 2 = 4 × 33 so R = 21cm & area of the circle = πR 2 = 22/7 R 2 = 22/7 × 21 × 21 = 1386 cm²
Find the range of the given data:
32, 72, 18, 22, 14, 92, 108, 122, 68
A and B have 6 and 7 pieces of bread respectively. They share their food with C, who pays them Rs 42 for the received breads. If each of them has equal ...
Which of the following is a Prime Number?
The smallest natural number that must be added to 1212 to make it a perfect square is:
- The smallest positive number 'P' which when divided by 21, 28, and 42 leaves 4 as the remainder in each case. Find the value of ('5P' - 10).
- ‘N’ is the biggest 3-digit number that leaves remainder 1 when divided by 3, 8, and 11. Determine the smallest number that needs to be added to ‘N’...
Find the smallest positive integer which when divided by 5, 7 and 9 leaves a remainder 4 in each case.
If the difference of two numbers is 4 and the difference of their squares is 56, then the larger number is
Which one of the following numbers is divisible by 11?
One-fourth of a number is 70. What will 40% of that number?
