If the circumference of a circle and the perimeter of a square are equal, then find the relation between area of circle and area of square.​

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

What is the y-intercept of the line with the equation 3x + 4y = 12?