Assertion and reason: units and formulae

Exercise and reference answers

Questions

1. Reason

   Its base is a circle, whose area involves r².

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   A cylinder's volume needs the radius squared.

2. Reason

   1000 cubic centimetres make one litre.

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   Capacity can be quoted in litres.

3. Reason

   One cubic metre equals a thousand litres.

   Verdict

   Both are true; the reason does not explain the assertion.

   Assertion

   A cube has six faces.

Explanation