The circumference of a circle is 157 units. How many units long is its diameter? (Use only the digits 0 - 9 and the decimal point, if needed, to write the answer.)

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2