Question

hemisphere is having diameter 7cm calculate curved surface area​

Answer 1

Answer:

Radius of hemisphere = diameter/2

= 7/2 cm

Volume of hemisphere = 2/3 π r

= 2/3 * 22/7 * 7/2

= 22/3

= 7.33 cm³

Now,

Curved surface area = 2 π r²

= 2 * 22/7 * (7/2)²

= 2 * 22/7 * 49/4

= 77 cm²

Total surface area = 3 π r²

= 3 * 22/7 * (7/2)²

= 3 * 22/7 * 49/4

= 115.5 cm²

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Step-by-step explanation:

Answer 2

Answer; 49/2 or 24.5cm2

Step-by-step explanation:

curved surface area=2pie r^2

(pie=22/7)

radius=diameter/2

r=7/2

2 *7/2 *7/2

=49/2cm2