PLEEEASSE HELPP ! YOULL GET 20 points AND THE BRAINLIEST ANSWER Below is a diagram of a pipeAn engineer wants to calculate the volume of cement it will take to build this pipe if r1=4ft, r2=5ft and h=20ft.
the answer options are
20π ft3
180π ft3
203π ft3
6400π ft3

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?