Question

The mass of the Mount Everest is 810 Trillion kilograms. Express it in megatonne. (1 megatonne = ${10}^6$ tonne)

• A. 810000

Answer 1

The correct option is A 810000
Given:

Mass of the Mt. Everest, m = 810 trillion kilograms

1 trillion = ${10}^{12}$
$⟹$ m = $810\times {10}^{12}kg=81\times {10}^{13}kg$

1 tonne = ${10}^{3}kg$
$⟹$ m = $81\times {10}^{10}$ tonne

1 megatonne = ${10}^6$ tonne
$⟹$ m = $81\times {10}^4$ megatonnes
$⟹$ m = 8,10,000 megatonnes.