Verified answer

Answer:

98.33

Step-by-step explanation:

S.P = 100-LOSS÷100×C.P

= 13 1/3 = 40/3 = 13.3

= 100-13.3÷100×12.50

= 98.33

Step-by-step explanation:

Given,

Radius of hemispher R=7 cm

Hight of cone h=49 cm

Volume of hemisphere V=

3

2

πR

3

=

3

2

π×(7)

3

cm

3

=

3

2

×343×π cm

3

=

3

686

π cm

3

Volume of cone V=

3

1

πr

2

h

=

3

1

πr

2

×49 cm

The hamisphere is cast into a right circular cone of hight (h=49 cm) and have base radius r.

→Volume of hemisphere = Volume of cone

3

686

π cm

3

=

3

49

πr

2

cm

r

2

=

49

686

cm

2

r

2

=14 cm

2

r=

14

cm

Hence, radius of base of cone r=3.74 cm

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