Okay, what is the area and its approximate uncertainty of a circle of a radius of 2.8 X 10 to the 4 cm? I just dont get the 10 to the power stuff. I can do it when its in decimal form just not when you have to do some thing like this for example...5X10 to the 17. ???
2006-09-12 10:02:03 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help
2.8*10^4 is 2.8* 10000 or 28000
area = pi * r^2
so 2.8*10^4 squared is 2.8*2.8*10^4*10^4
which is 7.84*10^8
when two numbers that are equal that are raised to any power get multiplied together, the product is the number raised to the power of the sum of the exponents
2006-09-12 10:07:07 · answer #1 · answered by odu83 7 · 0⤊ 0⤋
ok this is really easy,
2.8 x 10 is 28
2.8 x 10 to the 1 is 28
2.8 x 10 to the 2 is 280
2.8 x 10 to the 3 is 2,800
2.8 x 10 to the 4 is 28,000
Do you see where this is going?
2006-09-12 17:08:41 · answer #2 · answered by Chuyito 3 · 0⤊ 0⤋