Find the area and the circumference of a circle with radius 4 mm. Write your answers in terms of pi, and be sure to include the correct units in your answers.

Solution

Find the area and the circumference of a circle with radius 4 mm. Write your answers in terms of \pi, and be sure to include the correct units in your answers.

Solution

a re a : 16 π m m^{2}

c i rc u m f ere n ce : 8 π mm

Solution steps

Circle Area given

r = 4 : A = 16 π

Circle circumference given

r = 4 : C = 8 π

Popular Examples

The sum of two numbers is 55. The greater number is seventeen times the smaller number plus one. find the numbers.Six more than seven times a number is thirty-four. Find the number.The sum of three consecutive even numbers is 90. What are the numbers?The sum of 3 consecutive even numbers is 270 .A principal of\$2500 is invested at 3.25% interest, compounded annually. How much will the investment be worth after 12 years?