Question
The average of the first 6 numbers is 'x+40', the
average of the next 8 numbers is 'x', and the average of the remaining 6 numbers is 'x−10'. If the average of all the numbers is 70, find the value of 'x'.Solution
ATQ, 6(x+40)+8x+6(x−10)=70×20 6x+240+8x+6x−60=1400 20x+180=1400 20x=1220 x=61
Find the radius of the sphere whose volume is 562.5Ï€ cm3
- Length of a chord in a circle of radius 'r' cm, is 14 cm and distance between chord and centre of the circle is 24 cm. Find the value of (4r - 60).
The radius of a circle is 10 cm, and the length of the chord is 12 cm. Find the distance between the chord and the centre of the circle. Â
What will be inradius of an equilateral triangle of side 2 cm?
In a right angle triangle, the product of two sides is half of the square of the third side (i.e., hypotenuse). Accordingly find out the acute angle?
In the given Figure, Find  angle BCD. If AB is a diameter & AB is parallel to CD.
Angles of a triangle are in the ratio 2 : 3 : 7. Find the difference between the largest and smallest angle of the triangle.
If median AD of an equilateral ∆ABC is 6 cm and G is centroid. Find AG?
In ΔABC, PQ is parallel to BC If AP: PB= 3:4 and AQ= 6 cm, AC is equal to?
Relevant for Exams:
