The diameter of a quarter is 24.26 mm and the diameter of a nickel is 21.21 mm. How much bigger is the distance around a quarter than a nickel? (Use 3.14 for Π)

A. 4.7885 mm

B. 3.05 mm

C. 9.577 mm

D. 6.225 mm

What is the area of a circle with a diameter of 13.2 cm?

Use 3.14 for Π and round your final answer to the nearest hundredth.

Question 3 options:

A. 547.11 cm2

B. 136.78 cm2

C. 41.45 cm2

D. 20.724 cm2

What is the area of a circle whose radius is 6ft? (Use Π)

Question 4 options:

A. 6 Π ft2

B. 9 Π ft2

C. 36 Π ft2

D. 72 Π ft2

The circumference of a circle is 5 Π cm. What is the area of the circle?

Question 5 options:

A. 25 Π cm2

B. 10 Π cm2

C. 6.25 Π cm2

D. 2.5 Π cm2

i would say b) is your answer

sorry if im wrong

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places