In ΔKLM, l = 620 cm, m = 500 cm and ∠K=137°. Find the area of ΔKLM, to the nearest square centimeter.

4+6x-3x^3 in standard form with explanations because i don’t understand

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?