Question 52161
27%=.27 TO CHANGE A % TO A DECIMAL JUST MOVE THE DECIMAL 2 PLACES TO THE LEFT & DROP THE % SIGN.

B/Y=A CROSS MULTIPLY GIVES B=YA NOW DIVIDE BOTH SIDES BY A WE GET Y=B/A

B/X=X/A CROSS MULTIPLY WE GET X^2=AB OR X=SQRT(AB)

R^2=2GH OR DIVIDING BOTH SIDES BY 2G WE GET H=R^2/2G

(6*10^2)(9*10^3)/(2*10^0)(3*10^4) OR (600)(9000)/(2)(30000) OR 540000/60000=9