Step-by-step explanation:
NPL+MNP=180°(being the sum of co-interior angle)
y°+68°=180°
y°=180°-68°
y°=112° answer

because when you differentiate, only the constant of the x remains (which is m in this case), and c being another constant independent of x, is 0 when differentiated. hence, since dy/dx is the gradient of the line, m is therefore the gradient
Here’s the the answer and an explanation of how to get it :)
Answer: 31.25 cm^2
Step by Step Explination: I just went onto Google and typed in "surface area of a pyramid formula," and then entered the given values, and the given length and width are equal.
Hope this helps!