Question
Find out the volume of a tetrahedron whose side is
6√2 cm³ ?Solution
Volume of a tetrahedron = √2/12 a³ = √2/12 × 6√2× 6√2× 6√2 = √2 × √2 × 3√2 × 6√2 = 18 × 4 = 72 cm³
Three metallic cubes whose sides are 15 cm, 20 cm and 25 cm respectively are melted and converted into a single cube. If there is no loss of metal in t...
The area of a trapezium is 960 square metres and the parallel sides are 60 m and 36 m. What is the perpendicular distance between these two sides?
Perimeter of a square field is 160 meters and the area of a rectangular field is 30% more than that of the square field. Find the area (in m2...
The perimeter of a rectangle is 64 meters, and the ratio of its length to its breadth is 9:7. What is the area of the rectangle?
The radius of a circle is equal to the radius of base of a cone. If the diameter of the circle is 35 cm and the height of cone is 18 cm, then find the v...
The circumference of a circle is given as 220 m. What is the area of the circle? [Use π = 22/7]
A circular park is having the circumference of 110m. A uniform path of width 3.5m has been made around the park. Find the area of this path?
If the sum of the radius and height of a right circular cylinder is equal to three times the radius, what is the height of the cylinder in terms of the...
If 2156 is added in a number then number become 344(4/9)% of itself. Find the original number?
A solid rectangular block with dimensions 60 cm × 40 cm × 20 cm is melted down, and identical smaller rectangular blocks, each with a volume of 80 cm�...
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