Question
In which form is iron ore primarily found in
nature?Solution
Hematite (Fe₂O₃) is one of the most abundant and economically significant iron ores. It is used extensively in the production of iron and steel, contributing to its prominence in the iron ore industry.
If an arc subtends an angle of 90o at the centre of the circle whose radius is 28 cm, then find the area of that sector. [Take π = 22/7]
<p><p>The length of sides of a square is twice the radius of a circle and perimeter of a rectangle is half the perimeter of the squa...
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The circumference of a circle is 110 cm and the length of the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the re...
The ratio of the radii of two right circular cylinders (A and B) is 3 : 4.The ratio of the heights of cylinders A to B is 5 : 1. What is the ratio of th...
If x1 and x2 are the roots of the equation 2x2 + 3x – 9 = 0, then the equation which has the roots 1/x1 and1/x2 is:
A rectangular paper sheet of dimensions 22cm×12cm is folded in the form of a cylinder along its length. what will be the volume of this cylinder? Take ...
A figure is formed by revolving a rectangular sheet of dimensions 7cm ×4cm about its length. What is the volume of the figure. thus formed. (in c...
The volume and height of a cylinder are 2673 cm3 and 10.5 cm. Find the radius of the cylinder.
The volume of cone is 4752 cm3. If its height is 3.5 cm then find the radius of the cone.
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