The diameter of a sphere is 6.2 m. Calculate the sphere's surface area A. Use the value 3.14 for Pi, and round your answer to the nearest tenth.

What is the definition of exponential decay?

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)