Question

hii friends
their is some problem
so, please help me

Answer 1

i)3.844×10^8 metres

ii)9.4605×10^15 metres

Answer 2

1) The mean distance of the Moon from the Earth is 384,400,000 meters

$\\ = 38440000 \times {10}^{1} \: \: metres\\ = 3844000 \times {10}^{2} \: m \\ = 384400 \times {10}^{3} \: m \\ = 38440\times {10}^{4} m\\ =3844 \times {10}^{5} \: m \\ = 384.4 \times {10}^{6} m \\ = 38.44 \times {10}^{7} m \\ = 3.844 \times {10}^{8} \: m$
2) the distance travelled by a Ray of light in one year is 9,460,500,000,000,000
$= 946050000000000 \times {10}^{1} m \\ = 94605000000000 \times {10}^{2} m \\ = 9460500000000 \times {10}^{3} m \\ = 946050000000 \times {10}^{4} m \\ = 94605000000 \times {10}^{5} m \\ = 9460500000 \times {10}^{6} m \\ = 946050000 \times {10}^{7} m \\ = 94605000 \times {10}^{8} m \\ = 9460500 \times {10}^{9} m \\ = 946050 \times {10}^{10} m \\ = 94605 \times {10}^{11} m \\ = 9460.5 \times {10}^{12} m \\ = 946.05 \times {10}^{13} m \\ = 94.605 \times {10}^{14} m \\ = 9.4605 \times {10}^{15}m$

3) the number of red blood cells per cubic metre in human body is 5.5 m

= $0.55 \times {10}^{1} \: \: metres\\\\=55\times{10}^{1} cm\\\\=5.5\times{10}^{ 2} cm$