Question

one grain of this sand approximately weighs 7 x 10 to the power of -5 grams, how many grains of sand are there in 6300 kg of sand, give your answer in standard from

Answer 1

Answer:

"$9\times 10^{10}$" or "90000000000" grains are there in 6300 kg of sand

Step-by-step explanation:

Given

1 grain sand weighs = 7$\times$ $10^{-5}$

Let x be the number of grain in 6300 kg of sand

Solution:

x= $\frac{6300 \times 10^3}{7\times10^{-5}}= 900\times10^3\times10^5=9\times10^{10}$

"$9\times 10^{10}$" or "90000000000" grains are there in 6300 kg of sand