Question
If the numerical value of twice the curved surface area
of a right circular cylinder is equal to the numerical value of its volume, then what is the numerical value of the diameter of the base of the cylinder?Solution
The curved surface area of the cylinder = 2πrh The volume of the cylinder = πr²h ATQ- 2 × 2πrh = πr²h r = 4cm diameter = 2× 4 =8cm
The length of the each side of an equilateral triangle is 10.5 cm. The area of incircle, (cm 2 ) is
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The length of the each side of an equilateral triangle is 7√3. The area of incircle, (cm 2 ) is
The radius of a sphere is 12cm. The surface of the sphere is what percent of its volume
The total of the perimeter of a rectangle and the circumference of a circle is 156 cm. The rectangle's length equals the side of a square, and the squar...
The volume (in cu.cm.) of a right circular cylinder with radius 1 cm and height 2 cm on is: (Take π = 22/7)
If O is circumcentre of acute angled triangle ABC, if ∠ BAC = 35˚ then ∠ BOC = ?
Find the area of the region enclosed by the curves : y = 0, x = |y| and y = |x - 2|.
- One of the angles of a quadrilateral is 80º. If ratio of remaining angles of quadrilateral is 6:3:5 respectively, then find the smallest angle of quadrila...