Find x for 50 points ? With workings as they ask.

Is there  supposed to be a picture, cuz it doesn't show a pic on my screen

Srry...

x = 5.97

Step-by-step explanation:

The area of a circle is

A = pi r^2

56 = pi r^2

56 = 3.14 r^2

56/3.14 = r^2

17.8343949 = r^2

Take the square root of each side

4.223078842=r

The radius is 1/2 the diameter

2r =d

8.446157684 =d

The diameter is the hypotenuse of the square

a^2 + b^2 =c^2

but in a square a and b are the same, we will call it x where x is the length of the side

x^2 + x^2 = (8.446157684)^2

2x^2 = (8.446157684)^2

2x^2 =71.33757962

Divide by 2

x^2=35.66878981

Take the square root of each side

sqrt(x^2) =sqrt(35.66878981)

x = 5.972335373

To 3 significant figures

x = 5.97

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

the diver is 33 feet below the surface.

step-by-step explanation:

hope this