How many cubic centimetres of iron are there in an open box whose external dimensions are 36 cm,25 cm, and 16.5 cm, the iron being 1.5 cm thick throughout? If 1 cm3 of iron weighs 15 g. find the weight of the empty box in kilograms.
(a) How many milliamperes are there in 1 ampere? (b) How many microamperes are there in 1 ampere?
In the adjoining figure, ABCD is a quadrilateral. (i) How many pairs of adjacent sides are there? Name them. (ii) How many pairs of opposite sides are there? Name them. (iii) How many pairs of adjacent angles are there? Name them. (iv) How many pairs of opposite angles are there? Name them. (v) How many diagonals are there? Name them.