railway RPF SI Mock Test Series 2024 Quantitative Aptitude Mensuration Solid Figures

ଏକ କଠିନ କୋନ ର ସମୁଦାୟ ପୃଷ୍ଠ ତଳର କ୍ଷେତ୍ରଫଳ ଯାହାର ଭୂମି ର ବ୍ୟାସାର୍ଦ୍ଧ r ଏବଂ ଉଚ୍ଚତା h ଅଟେ, -

1
π(r2 + h2)
2
π(r2 + rh)
3
πr(r + \(\sqrt{h^2 + r^2}\))
4
πrh(r + h)
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