Find the diameter and radius of a circle given the approximate circumference of 38 meters. (3.14 for pi)

Sorry for these questions but I just don't understand them; -;

The number of pepperoni slices that kim puts on a pizza varies directly as the square of the diameter of the pizza. If she puts 15 slices on a 10" diameter pizza, how many slices should she put on a 16" diameter pizza?

Amanda is shipping a package, which is in the shape of a cube. To determine the cost of shipping, she must determine the side length of the packages She knows that the volume of the package is V cubic inches Which of the follow functions would best

If z is the principal square root of 8, what must be true? If z is the principal square root of 8, what must be true? A. z = 82, and z is positive B. z = 82, and z is negative C. z2 = 8, and z is negative D. z2 = 8, and z is positive

The value 4 is an upper bound for the zeros of the funtion shown below

A taxi company charges 75 cents a mile. Corinne and Kailyn took a cab ride and the final cost was 25.50. How many miles was the cab ride? one-step equations word problems

The circumference of a circle is about 25.3 in find the area of the circle using 3.14 as an approximation for pie. Round your answer the nearest hundredth

Juanita wants to participate in a 20-kilometer bicycle race. she is considering using one of the two training programs below. Program A: ride 10 kilometer on the first day and increase the Distance by an additional 500 meters each day.

Suppose you average 52 mi/h traveling on the highway. If you drive for 5 hours, how far will you travel? A. 260 miles B. 250 miles C. 350 miles D. 240 miles

A rectangular swimming pool is 6ft deep. One side of the pool is 4.5 times longer than the other. The amount of water needed to fill the swimming pool is 1728 cubic feet. Find the dimensions of the pool.

The 3 in 3.62 stands for 3