Find the area of a circle with a diameter of 12 yd use 3.14 for pi and DO NOT round. Be sure to include the correct unit in your answer
The radius of a circle is half of its diameter. In this case, the radius is 12 yd / 2 = 6 yd.
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
Plugging in the values, A = 3.14 * (6 yd)^2.
A = 3.14 * 36 yd^2 = 113.04 yd^2.
Therefore, the area of the circle with a diameter of 12 yd is 113.04 square yards.
Write 2x10^-6 in standard notation
In standard notation, 2x10^-6 can be written as 0.000002.
Find the circumference and the area of a circle with a radius of 7yd use the value 3.14 for pi and DO NOT round your answers. Be sure to include the correct units in your answers.
The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.
Plugging in the values, we have C = 2 * 3.14 * 7 yd.
C = 43.96 yd.
Therefore, the circumference of the circle with a radius of 7 yd is 43.96 yards.
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
Plugging in the values, we have A = 3.14 * (7 yd)^2.
A = 3.14 * 49 yd^2 = 153.86 yd^2.
Therefore, the area of the circle with a radius of 7 yd is 153.86 square yards.
Suppose some computations were done on a calculator.
The result displayed was 7.93E-34 for one computation.
The result displayed was 7.8E29 for another computation.
Write these numbers in scientific notation.
The number 7.93E-34 can be written in scientific notation as 7.93 x 10^-34.
The number 7.8E29 can be written in scientific notation as 7.8 x 10^29.
(A) a certain solution has a hydrogen ion concentration of 7.25x10^-4 moles per liter. Write this number in standard notation.
(b) a blue whale can weigh up to 420,000 pounds. Write this number in scientific notation.
(a) The number 7.25x10^-4 can be written in standard notation as 0.000725.
(b) The number 420,000 can be written in scientific notation as 4.2x10^5.