If the ratio of a circle's sector to its total area is 7/8, what is the measure of its sector's arc?

Check the picture below.  So the sector looks more  or less like that one.

we know a full circle has an arc of 2π, so how much is 7/8 of 2π?  well, is simply its product.

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐