Find the surface area of the open cylinder below whose diameter is 7cm and height is 10cm

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Write a story that matches with the expression 42x-5 pls hurry

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?