Question 21 Total Earth’s surface covered by water is (a) 75% (b) 60% (c) 85% (d) 50%
(a) 75% Water covers approximately 75% of the Earth’s surface and is vital for all known forms of life. Only 2.5% of Earth’s water is fresh water.
In the given figure, AB || DE. ∠A = 430 and ∠BDE = 570. The value of ∠x is ________.
Question 22
The per cent that represents the unshaded region in the figure, is (a) 75 % (b) 50 % (c) 40 % (d) 60 %