Question

A wooden article was made by scooping out a hemisphere of radius 7 cm, from
each end of a solid cylinder of height 10 cm and diameter 14 cm. Find the total
surface area of the article.

Answer 1

Answer:

1. The answer is 1056 $cm^{2}$

Step-by-step explanation:

Total surface area of cylinder = Curved surface area of cylinder + 2* curved surface area of hemisphere.

1. Curved surface area of cylinder = $2\pi rh$

r= 7 cm

h= 10 cm

$2*22/7*7*10$

=440 $cm^{2}$

2.  Surface area of hemisphere = $2\pi r^{2}$

$2*22/7*7^{2}$

=308 $cm^{2}$

surface area of 2 hemisphere = 2* 308 $cm^{2}$

=616 $cm^{2}$

Total surface area=  Curved surface area of cylinder + Surface area of hemisphere

440$cm^{2}$ + 616 $cm^{2}$

=1056 $cm^{2}$

Answer 2

Answer:

answer is 1056

Step-by-step explanation:

here,CSAof hemisphere+csa of cone

2πr²+1/3πr²h

2*22/7*7(2*7+10)

=1056