What is the area? round answer

Look at the picture below

Step-by-step explanation:

Howdy! My name is Christian and I’ll try and help you with this question!

Date: 9/29/20 Time:  8:51 am CST

314 cm^2

Explanation:

The formula for the area of a circle is A=3.14r^2

So we have our diameter so to get our radius we just divide that by 2.

Equation:

3.14(10^2)

314

Hope this helps you with your question!

Sincerely,

Christian

4400

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.