Question

Find the volume, the curved surface area and total surface area of a cone given that 1) radius of base = 3.5m and height =12m​

Answer 1

a3 (b – c)3 + b3 (c – a)3 + c3 (a – b)3

= [a (b – c)]3 + [b (c – a)]3 + [c (a – b)]3

Now, since, a (b – c) + b (c -a) + c (a – b)

= ab – ac + bc – ba + ca – bc = 0

So, a3 (b – c)3 + b3 (c – a)3 + c3 (a – b)3

= 3a (b – c) b (c – a) c (a – b)

= 3abc (a – b) (b – c) (c – a).