6r + 4n when r = 5 and n = 2

Step-by-step explanation:

When r = 5 and n = 2

Then

6r + 4n

= 6 * 5 + 4 * 2

= 30 + 8

= 38

Hope it will help :)

30 + 8

Step-by-step explanation:

6(5) = 30

4(2) = 8

Sorry if you get this wrong :/

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

by definition, an arc subtended by a central angle of some given measure has the same measure. so .