Question

Addison studies a tarantula there is 30 millimeters long. Suppose she used a microscope to magnify the spider by 4×10 to the second power. How long will the spider a peer to be.

Answer 1

we know that

If the microscope magnify the spider by $4*10^{2}$

that means that magnifies the spider 400 times

so

Multiply the length of the tarantula by $4*10^{2}$

$30mm*4*10^{2} =30mm*400=12,000 mm$

therefore

the answer is

the spider under such microscope he will appear to be 12000 mm