In this problem, the symbols m, l, and t represent the dimensions mass, length, and time, respectively. consider the physical quantities s, v, a, and t with dimensions [s] = l, [v] = lt-1, [a] = lt-2, and [t] = t. (here, the square bracket means "the dimensions of" so, for example, [s] represents the dimensions of the quantity s.)

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0

i have not got your picture clearly so see it once again

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet