To find the surface area of the door stopper, we need to calculate the total surface area by summing up the surface areas of all the sides.
Surface area = 2*(15.9 cm * 8.9 cm) + 2*(15.9 cm * 5 cm) + 2*(8.9 cm * 5 cm) = 2841.4 cm²
Now, divide the total surface area by the surface area covered by one pack of stickers:
2841.4 cm² / 75 cm² = 37.88 packs
Since stickers can only be purchased in whole packs, you would need to purchase 38 packs of stickers, which is closest to option A, which is 7 packages of stickers. Therefore, the answer is A. You will need 7 packages of stickers.
Use the image to answer the question.
there is a wooden door stopper that has the measurements of 15.9 cm, 8.9 cm, 5 cm, and 16.7 cm
A wooden door stopper needs to be covered with stickers to match the door for a directing contest. If one package of stickers covers a surface area of 75 square centimeters, how many packages to stickers need to be purchased?
(Find the closest number to the surface area of the door stopper. Stickers may only be purchase in whole packs.)
A. You will need 7 packages of stickers.
B. You will need 5.5 packages of stickers.
C. You will need 6 packages of stickers.
D. You will need 414.14 cm squared packages of stickers.
1 answer
1 answer