A company is designing a new cylindrical water bottle. The volume of the bottle will be 194 cm^3 . The height of the water bottle is 7.4 cm. What is the radius of the water​ bottle? Use 3.14 for π .

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?