Question

Jane is wrapping a can of paint to gift a friend. If the can is 11 inches high and has a diameter of 7 inches, then how many square inches of wrapping paper will she use for covering the can?

• A. 319
• B. 120
• C. 432
• D. 231

Answer 1

The correct option is A

319

In this problem
d = 7 inches
r = 3.5 inches
h = 11 inches

$T.SurfaceArea$ = $2\times (\pi \times r\times r)$ + $2\times (\pi \times r\times h)$

=$2\times (\frac{22}{7}\times 3.5\times 3.5)$ + $2\times (\frac{22}{7}\times 3.5\times 11)$

=$77+242$
$T.SurfaceArea$ = $319$ square inches

Hence 319 square inches of wrapping paper will be required to cover the can.