What is the height of the cone below?

A cone with base of 18 centimeters squared and volume of 90 centimeters cubed.

5 cm

6 cm

15 cm

30 cm

Nu is designing a rectangular sandbox. the bottom is 16 square feet. which dimensions require the least amount of material for the sides of the sandbox.

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers