C. 17 r 1 is the correct answer
190mph
I used speed calculator with advanced mode
HTTP://www.omnicalculator.com/everyday-life/speed
Formula
1/2 (b×h)
plug in
1/2 (6×3)
1/2 (18)
9 ft squared.
always remember measurement of the shape, square your answer because your finding area and formulas. the numbers on the side are to distract you.
12. Both sides of the equation are equal and if 18 is half of 36 then 6×2 will give you the value of X