3(1.4*10^6) multiply or divide. write tje answer in scientific notation

4.2 * 10^6

Step-by-step explanation:

Hard way: 10 to the power of 6 is 1,000,000. That times 1.4 is 1,400,000. That product times 3 is 4,200,000. 4.2 times 10 to the power of 6 will be the answer written in scientific notation.

Easy way: 3 times 1.4 is 4.2. 4.2 times 10 to the power of 6 is the answer.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

6 meters

step-by-step explanation: