Do that to the other side making it 45 inches.
Add those together to get 165 inches.
Or, 13 feet, 9 inches.
256π units² (answer b)
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)
answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.
p = perimeter
l = length
p = 2l + 2x
p = 2(l+x) < ==== perimeter of the base of the box.