Question

FIND THE VOLUME OF CURVED SURFACE AREA AND THE TOTAL SURFACE AREA OF HEISPHERE OF DIAMETER 78 CM

Answer 1

Hope it helped!!!!!!!!!!

CSA and TSA is same for a hemispherical shell

Answer 2

ANSWER

Given,

The Diameter of Hemisphere = 78cm(d)

The radius of Hemisphere = $\frac{78}{2}$ = 39cm.

Now, we know that =>

-The volume of Hemisphere

= $\frac{4}{3}$ × π$r^3$

=>Volume of Hemisphere = $\frac{4}{3}$ × π$39^3$

=>Volume of Hemisphere = $\frac{4}{3}$ × $\frac{22}{7}$×59,319

=>Volume of Hemisphere = $\frac{4}{3}$ ×186431.14

=>Volume of Hemisphere.

=>0.2488$m^3$.

Hence, the volume of the hemisphere is 0.2488$m^3$.

-Curved Surface Area

=>2π$r^2$

=>2 ×$\dfrac {22}{7}$ ×39×39

=>9560.57cm^2.

Hence the curved surface area of the hemisphere is 9560.57$cm^2$

-Total Surface Area

=> 4π$r^2$

=>4× $\dfrac {22}{7}$ × 351

=>4412.571$cm^2$.

Hence the curved surface area of the hemisphere is 4412.57 $cm^2$.

REMEMBER

CSA of Hemisphere = 2π$r^2$

TSA of Hemisphere = 4π$r^2$

Volume of Hemisphere = $\frac{4}{3}$ × π$r^3$