Do anyone know a good website for studying

Give all possible names for each angle shown.calculation tip: in angle abc, b is the vertex.

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w