Question

a hemispherical impression is there on a face of a cube with edge 5cm the diameter of the hemisphere is 4.2cm find TSA and volume of the object​

Answer 1

Answer:

firstly area of hemisphere = pie r d square which implies

2×22/7×2.1×2.1=27.72

now area of cube =6a d square which implies

6×5×5=150

here we have to find TSA of solid so .. base of hemisphere shouldn't be count..so we have to minus 22/7×2.1 the whole square

= 13.85

hence TSA of solid = 27.72+150-13.85=163.87 cm the square

VOLUME

volume of hemisphere + volume of cube

2/3 pie r ^3 + a^3

19.404+125=144.404cm^3