Question

A toy is in the form of a cone mounted on a hemisphere of diameter 7cm the total height of the toy is 45cm find the volume and the t.s.a

Answer 1

Answer:

Since total height of toy is 31cm,

So, the height of cone is (h)=31−7=24cm

Also,radius of cone(r)=7cm

Now, l=

7

2

+24

2

=

49+576

=

625

=25cm

Now, total surface area of toy=2πr

2

+πrl=πr(2r+l)

=

7

22

×7(14+25)cm

2

=22×39=858sq.cm

Answer 2

Answer:

The answer is 858sq.cm