Yes what do you need help with?
78 is the significant figure because in maths 0's are not considered significant. Read more into significant figures to help you out.
Answer:
1.5 Kilometers and 150000 Centimeters
Step-by-step explanation:
5 × 10 -5 kilometers in 1 1 / 2 centimeters. To convert any value in centimeters to kilometers, just multiply the value in centimeters by the conversion factor 1 / 100000 . So, 1.5 centimeters times 1 / 100000 is equal to 1.5 × 10 -5 kilometers.
I hope this helps!
Step-by-step explanation:
A=4πr^2=4·π·10^2≈1256.63706ft²
Answer is 1256ft^2
