Question

Diameter of hemispherical toy is 56cm.Find its curved surface area and total surface area and volume

Answer 1

Answer:

Step-by-step explanation:

CSA=2pie r square

=2×22/7×28

=4928cm square

TSA=3pie r square

=3×22/7×28×28

=7392cm square

VOLUME = 2/3pie r cube

= 2/3×22/7×28×28×28

= 321962.66667 cm cube

Hope it helps u❤❤❤

Answer 2

The curved surface area of hemisphere is 4928 cm².

The total surface area of hemisphere is 7392 cm².

The volume of hemisphere is 45994.66 cm³.

Step-by-step explanation:

Given : Diameter of hemispherical toy is 56 cm.

To find : Its curved surface area and total surface area and volume ?

Solution :

A hemisphere of diameter 56 cm.

The radius is $r=\frac{56}{2}=28\ cm$

The curved surface area of hemisphere is $CSA=2\pi r^2$

$CSA=2\times \frac{22}{7}\times (28)^2$

$CSA=4928\ cm^2$

The total surface area of hemisphere is $TSA=3\pi r^2$

$TSA=3\times \frac{22}{7}\times (28)^2$

$TSA=7392\ cm^2$

The volume of hemisphere is $V=\frac{2}{3}\pi r^3$

$V=\frac{2}{3}\times \frac{22}{7}\times (28)^3$

$V=45994.66\ cm^3$

#Learn more

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