Math, asked by Subhamlkr97, 1 year ago

a hemispherical depression is cut out from one face of cubical wooden block such that the diameter L of the hemisphere is equal to the edge of the cube determine the surface area of remaining solid

Answers

Answered by Nikil007
14
LSA of Cube + Area of square (Bottom)+Area of square -Area of circle +CSA of Hemisphere
4L^2+L^2+L^2-π(L/2)^2+2π(L/2)^2
6L^2+π(L/2)^2
6L^2×4+π×L^2/4
24L^2+πL^2/4
L^2(24+3.14)/4
L^2(27.14)/4
Answered by Shivayalaya
8
area of 5 faces of cube = 5×Lsq
area of 6th face of cube(after cutting out hemisphere) = {2pi(L/2)^2}+{Lsq-piLsq/4}



hence required area = 6L^2+piL^2/4
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