Question

a solid toy is in the form of a hemisphere surrounded by a right circular cylinder the height of the cone is 6cm and diameter of the base is 8cm
a. find the value of a toy
b. find the total surface area of the toy
c. find the difference of the valumes of cone and hemisphere​

Answer 1

Answer:

I think it's helpful to you

Step-by-step explanation:

Answer

Volume of toy = Vol. of cone + Vol.of hemisphere

=

3

1

πr

2

H+

3

2

πr

3

=

3

1

πr

2

[H+2r]h

=

3

1

×

7

22

×2×2[2+2×2]

=

3

1

×

7

22

×4×6

2

=25.12cm

3

Volume of cylinder =πr

2

h=

7

22

×2×2[2+2]=

7

22

×16=50.24cm

3

Difference in volume =50.24−25.12=25.12cm

3

Hence, cylinder cover 25.12cm

3

more space.

solution