Can somebody me with these four math questions?

1. the length of a rectangle is 15 ft and its width is 10 ft. what is the effect on the area of the rectangle when all of its dimensions are multiplied by 1/5?

2. the surface area of a sphere is 100π cm². what is the volume of the sphere?

3. a hotel is in the shape of a square pyramid. each side of the base is 183 m long and the height is 110 m. what is the volume of the pyramid?

4. △bcd is a right triangle. the length of the hypotenuse is 18 cm. the length of one of the legs is 14 cm. what is the length of the other leg?

you to anyone who !

Hye ryung is the president of the local chapter of the american medical students association (amsa). she is organizing local outreach and informational meetings. at her first meeting there are five people present (including herself). every month after that her group grows by 5 people. a. how many members are in the group after 6 months? b. the logistics of hosting and feeding her group at meetings was more complicated than expected. the cost of feeding 5 people at her first meeting was $30, for 10 people it was $35, for 15 it was $45, and after 6 months all of the costs had added up to $100. write a function to model the cost with the number of people attending meetings. c. what connections can you make between the linear growth of the group’s membership and the increasing costs of running meetings?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?