Area and perimeter i need help with problems 2 & 3

number 1:area is 30 , perimeter is 22

number 2:area is 450 perimeter is 29

Step-by-step explanation:

1 = 30, 22. 2 = 45, 33.

Step-by-step explanation:

For step 1, multiply the numbers to get the area, then double them and add them all to get the perimeter.

For step 2, multiply the two sets of numbers, 5 and 3, and 6 and 5, and add them. For the perimeter do the same as step 1.

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)