Mathematics is like music – Enjoy it!!!
Volume of Cylinder vs Cone The volume of a cone is exactly one-third of the volume of a cylinder with same base radius and height. The following activity is very easy for you to perform at home to verify this.…
Read MoreLitres and Cubic centimetre This activity will help you understand the conversion of cubic centimeter to litres. You can also perform this activity at home and you will never forget this conversion in your life. 1000 cm³ = 1000 cc…
Read MoreWhat is Area / Surface area / Volume It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.
Read MoreExample 10: A capsule of medicine is in the shape of a sphere of diameter 3.5 mm. How much medicine (in mm3) is needed to fill this capsule? Question 9 Class 9 | Home
Read MoreExample 9: Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere with surface area S′. Find the (i) radius r ′ of the new sphere, (ii) ratio of S and…
Read MoreExample 8: A dome of a building is in the form of a hemisphere. From inside, it was white-washed at the cost of Rs. 4989.60. If the cost of white-washing is Rs. 20 per square metre, find the (i) inside…
Read MoreExample 7: Find the volume of a sphere whose surface area is 154 cm2. Question 6 Question 8
Read MoreExample 6: A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank. Question 5 Question 7
Read MoreExample 5: How many litres of milk can a hemispherical bowl of diameter 10.5 cm hold? Question 4 Question 6
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