heyy guys how r u all plss fo llo w me and like me also i wanna ask a question what is the answer of 2+2÷2=?​

Three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder ( ! : ”0 )

Having a hard time understanding this question (see attachment).

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319