Question
Sum of first 20 terms of an AP is 610. First term = 12.
Find approximate common difference.Solution
ATQ, → S = (n/2)[2a + (n–1)d] → 610 = 10(24 + 19d) → d = 37/19 ≈ 1.95 or 2
Imagine that you have three identical cubes, each with a side length of 8 cm. These cubes are aligned and combined along their sides to form a single, e...
A right circular cylinder having total surface area of 16940 cm2 is immersed in a vessel completely filled with water. If the height of the c...
A cone is parallel to its base in such a way that the volume of the smaller cone is 1/2197 times of the bigger cone. Find the height of the smaller co...
The length of the rectangle is triple its breadth. If the perimeter of the rectangle is 120 m, then find the area (in m 2) of the rectangle.
The radius of a cylindrical tank is 7 meters, and its height is 14 meters. How much water will it take to fill the tank to half its capacity?
A polygon has 104 diagonals, the number of sides of the polygon is?
In a division the quotient is 12, the divisor is 15 and the remainder is 7. What is the dividend?
Height of a cylindrical vessel is equal to side of a square, whose area is 324cm². Radius of cylindrical vessel is equal to average of radius of a sphe...
Perimeter of a square is equal to perimeter of a rectangle, if area of square is 441 sq.cm and length of rectangle is two times that of breath. Find the...
A pipe fills a cubical tank at the rate of 128 m3 per minute in 32 minutes. If a cylindrical tank having height same as the side of a cubical...
