The volume of a cube is 40 cm and its base area is 8 cm?, find its height.

If the radius of a cylinder is 4cm and height is 10cm, find total surface are

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Answer:if the radius of a cylinder is 4 cm

if the height of a cylinder is 10 cm

Total surface area of cylinder =2×22÷7×r×(h+r)

=2×22÷7×4 cm ×(10cm +4cm)

=2×7×22×4×14

=17248