What is the circumference of a circular amphitheater with a diameter of 300 meters rounded to the nearest tenth)?

Circumference of circular amphitheater is:

942.5 meters

Step-by-step explanation:

Circular amphitheater has a diameter of 300 meters.

We have to find its circumference.

We know that circumference of a circle=2πr or πd

Where r is the radius and d is the diameter

here we are given the diameter

Hence, we will find the circumference by the formula: πd

=3.1416×300 meters

= 942.48 meters

Hence, circumference of circular amphitheater is:

942.5 meters

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

actually your concept is wrong

step-by-step explanation:

150% of x =300

150x=300×100

x=(300×100)÷150

x=200