Ch.22 : Ex 22 (B) : Volume and Surface area of a Cone (continued)
In the first step for our work today we attempt Ex.22 (B) : Nos.10 and 13
In the second step we attempt Ex.22 (B) : Nos 8 and 9
Here we're again working with the cone - its volume and surface area. Remember whenever the sum involves the covering of a conical heap - we need to find the surface area.
Do the sums.
In the first step for our work today we attempt Ex.22 (B) : Nos.10 and 13
- both these sums involve a large cone and smaller cones - in sum no.9 the large cone is melted into smaller cones and in sum no.13 the equate the volume of the cone with water - drop some smaller cones into the water - and our friend Archimedes works his principle and some water flows out - what does that volume of water equal ? You're correct - the volume of the cones which had been dropped into the larger cone !
In the second step we attempt Ex.22 (B) : Nos 8 and 9
Here we're again working with the cone - its volume and surface area. Remember whenever the sum involves the covering of a conical heap - we need to find the surface area.
Do the sums.
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