Pete is 15 years old. this is 6 years younger than his sister victoria. write and solve a subtraction equation to find victoria’s age

How do you solve a question like this?

What is the radius of the cone in the diagram? round your answer to the nearest whole number

Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?