This can help you to understand it
Take your graph and turn it counterclockwise 90°, 3 times (which equals 270°).
Let the horizontal line represent the x-axis and the vertical line represent the y-axis. What are the new coordinates of the image? J'(2, 6), M'(-1, 5)
Answer: C
Let the required no. be x
Then the equation is-
(150/100)x = 750
=> x = 750 × (100/150)
=> x = 500
Ans- 750 is 150 percent of 500.
so you use the formula a^2 + b^2 = c^2
so C will be JL
13m^2 + 17m^2 = c^2
458 m = c^2
to leave C alone you need to square root it
√458m = √c^2
21.4 = C