Question

surface of an area of the sun is about 4 x 3.141 x (7 x 10 ^ 5)to the power of 2 square kilometers simplify the expression

Answer 1

we have 
(4)*(3.141)*(7x10^5)²

we know that
(4)*(3.141)=12.564
and
(7x10^5)²=7²x10^(5*2)----> 49 x10^10
so
(4)*(3.141)*(7x10^5)²=(12.564)*(49 x10^10)----> 615.636 x10^10

615.636 x 10^10=6.15636 x 10^12 km²

the answer is
6.15636 x 10^12 km²

Answer 2

Answer:

6156360000000 square kilometers

Step-by-step explanation: 4 · 3.141 · (7 · 10^5)^2

Step 1: 4 · 3.141 · (7^2 · 10^10)

Step 2: 4 · 3.141 · (49 · 10000000000)

Step 3: 4 · 3.141 (490000000000)

Step 4: 12.564 · 490000000000

Step 5: 6156360000000