Question

TSA of solids. 1) cuboid 2)cube 3) cone 4) cylinder 5) sphere 6) hemi-sphere.

Answer 1

1) TSA of cuboid = 2(LB+BH+HL)
2)TSA of cube = 6a^2
3)TSA of cone = curved area + base area = πrl + πr^2 = πr(r+l)
4) TSA of cylinder = 2πrh + 2πr^2 = 2πr(h+r)
5) TSA of sphere = 4πr^2
6) TSA of hemisphere = 3πr^2

Answer 2

1) 2(lb+bh+hl)

2) 6a^2

3) pi×r(l+r)

4) 2×pi×r(r+h)

5) 4×pi×r^2

6) 3×pi×r^2

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