Circle A has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. The diameter of circle B is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. help me
Part A: Using the formula for circumference, solve for the value of pi for each circle. (4 points)

Part B: Use the formula for area and solve for the value of pi for each circle. (4 points)

Part C: What observation can you make about the value of pi for circles A and B?

Step-by-step explanation:

Write down your information-

Circle A: 7in Diameter with a circumference of 21.98 inches and an area of 38.465 square inches

Circle B: : 6in Diameter with a circumference of 18.84 inches and an area of 28.26 square inches

Part A: The formula for circumference is c=2pi(r). We then want to divide diameter by two to get radius while you plug in your other values. You would then get these two equations:

      1) 21.98=2pi(3.5)      2) 18.84=2pi(3)

      21.98/(3.5)2=pi          18.84/(3)2=pi

       pi=12.56                   pi= 12.56

Part B: The formula for Area is A=pi(r^2). Since we already have our radius we can plug in all the in all the information that we have to solve for pi. The equations should be:

        1) 38.465=pi(3.5^2)           2) 28.26=pi(3^2)

         38.465/(3.5^2)=pi             28.26/(3^2) =pi

               pi= 3.14                                pi= 3.14

Part C: The obserservation to be made is find the pi of the area of a circle is going to equal to pi=3.14.

something that characterises a right triangle is the fact that we may use pythagoras' theorem to find any one of its sides given that we have the length of the other two sides. here, we have the length of the hypotenuse, √(87) yd, and one other side, √(23) yd, thus we can easily find the length of the remaining side using pythagoras' theorem as defined below:

c^2 = a^2 + b^2, where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

thus, given that c = √(87) and a = √(23), we may substitute these into the formula we defined above to get:

c^2 = a^2 + b^2

(√87)^2 = (√23)^2 + b^2 (substitute c = √87 and a = √23 into the equation)

87 = 23 + b^2 (evaluate (√87)^2 = 87 and (√23)^2 = 23 - remember that the square root of a number, squared will equal that very same number)

64 = b^2 (subtract 23 from both sides)

√64 = b (take the square root of both sides)

8 = b (evaluate √64 = 8)

therefor, the length of the unknown leg in the right triangle is 8 yd (first answer).

a

step-by-step explanation:

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