Question
Who was awarded the Pradhan Mantri Rashtriya Bal
Puraskar for innovation in Parkinsonās support devices?Solution
Sindhoora Raja was recognized for her innovation in developing support devices for Parkinsonās patients.
If the lengths of the diameters of two concentric circles are 16cm and 18cm respectively, then what will be the area of the region between them?
The minute hand of a clock is 28cm long. Find the area on the face of the clock swept by the minute hand between 8 a.m. and 8: 45a.m
Two circles of radii 15 cm and 10 cm touch each other externally at a point A. PQ is the direct common tangent of those two circles of centers O ā and...
In a circle, two chords AB & CD are produced at P which is outside the circle . If PA= 12 cm, AB= 10 cm , PC = 2 cm then find CD.
- The diagonals of a rhombus are in the ratio 7:5, and its area is 3,500 cmĀ². A circle is formed taking the smaller diagonal as the diameter. Find the diffe...
- A square has an area of 2,500 cmĀ². Find the area of a circle whose radius is (2/5)įµŹ° of the length of the squareās side. (Take Ļ = 3.14)
The area of a sector of a circle is 88cmĀ² and the angle of the sector is 60Āŗ. Find the radius of the circle.
- In a circular field, the area is six times its circumference in terms of numerical value. Calculate the diameter of the field.
The wheel of a car made 300 rotations. How much distance did the car travel if the diameter of the wheel is 28 inches? (1 inch = 2.54cm)
- Calculate the area of a sector of a circle having a radius of 21 cm, if the angle at the center made by the sector is 60Ā°.
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