In your question where ask to evaluate the function using calculator and then take its reciprocal and the function is cos(135). Base on my calculation and through step by step procedure and with the guidance of the theories and by the use of formulas, I came up with an answer - sqrt of 2

7 0

3 years ago

PLEASE HELP BRAINLIEST

vaieri [72.5K]

Answer:

$h=15.23 \:\mathrm{in^2}$

Step-by-step explanation:

The surface area of this cylinder consist of two circles and a 3D outer edge with respect to the circumference. The area of a circle is given as $r^2\pi$ . Using $\pi=3.14$ as requested in the problem, the area of both these circles is:

$2\cdot6^2\cdot 3.14=226.08\:\mathrm{in^2}\\$ .

The 3D outer edge is then $800-226.08=573.92\:\mathrm{in^2}$ .

The area of this 3D outer edge is represented by $2r\pi\cdot h$ . Therefore, we set up the following equation:

$2r\pi\cdot h=573.92, \\h=\frac{573.92}{2r\pi}, \\h=\fbox{$15.23\:\mathrm{in^2}$}$ .

7 0

3 years ago