Question

A hemispherical bowl is made of steel 0.25cm thick the inside radius of bowl is 5cm find the volume of steel making bowl.​

Answer 1

$\sf{\underline{\red{\underline{\green{Question:-}}}}}$

A hemispherical bowl is made of steel 0.25cm thick the inside radius of bowl is 5cm find the volume of steel making bowl.

$\sf{\underline{\red{\underline{\green{Given:-}}}}}$

• $\sf Thickness(R)=0.25cm$
• $\sf inner\: radius(r)= 5cm$

$\sf{\underline{\red{\underline{\green{To\:Find:-}}}}}$

• $\sf Volume\:of\:steel\:in\:making\:bowl=?$

$\sf{\underline{\red{\underline{\green{FORMULA\:USED:-}}}}}$

$\sf{\green{\fbox{\red{\underline{\pink{\underline{volume\:of\: Hemisphere=\frac{2}{3}π(R^3-r^3)}}}}}}}$

$\sf{\underline{\red{\underline{\green{Solution:-}}}}}$

$\sf→ \frac{2}{3}×\frac{22}{7}[(5.25)^3-5^3]\\\sf→ \frac{44}{21}[144.703125-125]\\\sf→ \frac{44}{21}×19.703125\\\sf→ \frac{866.9375}{21}\\\sf→ 49.28cm^3$

$\sf{\underline{\red{\underline{\green{Hence:-}}}}}$

• Volume of steel making bowl = 49.28$\sf cm^3$

Answer 2

${\huge{\green{\underline{\underline{\pink{Aηѕωєя \: :}}}}}}$

$\small\bold{Inner \: radius \: of \: the \: bowl \: = }$ 5cm

$\small\bold{Thickness \: of \: the \: steel \: =}$ 0.25cm

$\small\bold{Outer \: radius \: of \: the \: bowl \: =}$ 5+0.25=5.25cm

$\small\bold{Outer \: Curved \: surface \: of \: the \: hemispherical \: bowl \: =}$ 2πr²

= 2× $\large\dfrac{22}{7}$ × (5.25)² = 172.25 cm²

${\huge{\red{\underline{\overline{\mathscr{\red{Hope \: This \: Helps \: You}}}}}}}$