17.5 x 3 = 52.5
4 x 4 = 16
16 + 52.5 = 68.5
So the answer is 68.5cm
I just used PEMDAS. It was easy.
Answer: It will be needed 864 square feet of glass to cover the Skywalk floor.
Step-by-step explanation: The figure below shows the area in question.
Area of a circle is given by
The walkway is a semicircle. Then, area will be:
The area that will be covered with glass is the area between the outer and the inner circles. So, area is
864
<u>To cover the Skywalk floor is needed </u><u>864</u><u> of glass</u><u>.</u>
You can plug -x - 1 for y in the first equation
2x - (-x - 1) = 10
2x + x + 1 = 10
Combine
3x = 9
Divide
x = 3
Plug 3 for x in any equation ( I'll use th second equation )
y = - (3) - 1
y = - 3 - 1 = -4
x = 3 ; y = -4
(3, -4)
Use the formula to help Sa(lw)+(Hw)+(Lh)