MEDIUM
Earn 100

Find the perimeter of the square whose side is:

72 mm

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Important Questions on How Many Squares?

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There are two concentric circles. The radii of the two circles are 100 m and 110 m respectively. A wheel of radius 30 cm rolls on the smaller circle and another wheel rolls on the larger circle. After they have completed one revolution, it is found that the two wheels rolled equal number of times on their respective axes. What is the radius of the other wheel?

MEDIUM
The perimeter of a circular lawn is 1232 m. There is 7 m wide path around the lawn. The area  (in m2) of the path is: (Take π=227)
EASY

Consider the following

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There are seven places marked as P, Q, R, S, T, U and V as shown in the diagram. The directly connected paths between two places are indicated by line segments joining the two places along-with the length labelled (in km). Then, the shortest distance between P and U is

MEDIUM
Two rectangles are of same area equal to 480 sq.cm. They differ in lengths by 6 cm and breadths by 4 cm. What is the difference in their perimeters?
EASY
If the area of an equilateral triangle is 363 cm2, then the perimeter of the triangle is:
MEDIUM
The sides of a right-angled triangle are in the ratio x:x-1:x-18. What is the perimeter of the triangle?
EASY

A circular coil of radius 1 cm is allowed to roll freely on the periphery over a circular disc of radius 10 cm. If the disc has no movement and the coin completes one revolution rolling on the periphery over the disc and without slipping, then what is the number of times the coin rotated about its centre?

EASY
The area of a square is 144 cm2. What is the perimeter of the square formed with the diagonal of the original square as its side?
MEDIUM
The area of each square of a chessboard having 64 equal squares is 4 cm2. If there is a border on all the sides of the chessboard of 2 cm, then the perimeter of the chessboard is:
EASY
A circle is inscribed in a triangle ABC. It touches sides AB, BC and AC at points RP and Q, respectively. If AQ=3.5 cm, PC=4.5 cm and BR=7 cm, then the perimeter (in cm) of the triangle ABC is:
MEDIUM
The respective ratio between the length and breadth of a rectangle is 8:5 and its perimeter is 208 cm. If the side of the square is 40% less than the breadth of the rectangle, what is the perimeter of the square?
EASY
If the perimeter of a semi-circle is 144 cm, find its radius (in cm).
EASY
If the perimeter of a square plot is the same as that of rectangular plot with side 35 m and 15 m. The side of square plot is:
MEDIUM
Triangle ABC is similar to LDEF. The perimeters of AABC and ADEF are 40 cm and 30 cm respectively. What is the ratio of (BC+CA) to (EF+FD) equal to?
MEDIUM
The diagonal of a square A is (a+b) units. What is the area (in square units) of the square drawn on the diagonal of square B whose area is twice the area of A?
EASY
What is the area of the largest square which can be inscribed in a circle of radius 14 cm? (Take π=227)
EASY
What is the area of the largest square which can be inscribed in a circle of radius 28 cm?
EASY
The perimeter of a square is half the perimeter of a rectangle. The perimeter of the square is 40 m. If its breadth is two-third of its length, then what is the area (in m2) of the rectangle?
EASY
The radius of a circular garden is 42 m. The distance (in meter) covered by running 8 rounds around it is: (Take π=227
EASY
The radius of a circular field is 31.5 metres. What is the circumference?