Answer:
4.4 inches
Step-by-step explanation:
Here, we are interested in calculating the value of x.
Mathematically, a line that comes from the center of the circle and extends to a chord, divides the chord into two equal parts.
This means what we have is a right angled triangle with the radius being the hypotenuse, the half of the length of the chord as the other side of the triangle.
3.7 is half the length of the chord i.e 7.4/2
Thus;
using Pythagoras’ theorem
x^2 = 2.4^2 + 3.7^2
Pythagoras’ posited that the square of the hypotenuse is equal to the sum of the squares of the other two sides of the triangle.
Thus;
x^2 =5.76 + 13.69
x^2 = 19.45
x = √(19.45)
x = 4.41 inches which is 4.4 inches to the nearest tenth
So he wants to mark the product up by 33%, now, if we take 6.95 to be the 100%, what is 33% of that?
so the marked up price will be 6.95 + x.
To find surface area you must find the area of the top, area of the bottom, area of the front side, area of the back side, area of the left side and area of the right side. Then you would add them together.
15 times 32 equals 480. 480 divided by 16 equals 30. 30 is the answer. Hope I helped.