5. A book of length 20 cm and breadth 5 cm is kept on a table, its area is (a) 50 cm
(b) 100 cm
(c) 150 cm
(d) 200 cm​

area=length×width

20×5

=100cm

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.