What is an equivalent expression to a^3b^2x^4a

a^4 b^2 x^4

Step-by-step explanation:

The exponent "product rule" tells us you, when multiplying two powers that have the same base, you can add the exponents.

so

a^3 b^2 x^4 a^1  

a^3  and a^1 have the same base of a.  So, add 3 + 1 for 4

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice