What’s (7(123456.789)4)0 but the 4 and 0 at the end are exponents

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

This is about circle theorems. someone asap : (

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet