Question

What is a the volume of a salt crystal measuring 3.22 x 10^-2 cm by 1.5 x 10^-4 cm by 4.30 x 10^-3 cm?

Answer 1

Dimension of the salt crystal is:

Length = 3.22 x 10^-2 cm

Breadth = 1.5 x 10^-4 cm

Height = 4.30 x 10^-3 cm

So it is cuboidal in shape.

Volume = L × B × H

$V = 3.22 \times {10}^{ - 2} \times 1.5 \times {10}^{ - 4} \times 4.30 \times {10}^{ - 3} \\ \\ V = 3.22 \times 1.5 \times 4.30 \times {10}^{ (- 2 - 3 - 4)} \\ \\ V = 20.769\times {10}^{ - 9} \\ \\ V = 2.0769 \times {10}^{ - 8} \\ \\ V \approx 2.1 \times {10}^{ - 8} \: {cm}^{3} \\ \\ \boxed{ \red{ \bold{answer: a}}}$