Question

Find the volume of a hemisphere of diameter 7 dm

Answer 1

Step-by-step explanation:

★R of hemisphere = 7cm

★Using Formula :-

★Volume of hemisphere :-

\tt{\rightarrow(\dfrac{2}{3}\pi r^3}

\tt{\rightarrow\dfrac{2}{3}\times\dfrac{22}{7}\times\dfrac{7}{2}\times\dfrac{7}{2}\times\dfrac{7}{2}}

\tt{\rightarrow\dfrac{539}{6}}

= 89.83 cm^3

★CSA of Hemisphere :-

= 2πr²

\tt{\rightarrow 2\times\dfrac{22}{7}\times\dfrac{7}{2}\times\dfrac{7}{2}}

= 77 cm²

★TSA of Hemisphere :-

= 3πr²

\tt{\rightarrow 3\times\dfrac{22}{7}\times\dfrac{7}{2}\times\dfrac{7}{2}}

\tt{\rightarrow\dfrac{231}{2}}

= 115.5 cm²

Answer 2

Step-by-step explanation:

i hope this helps u......