Margaret is cutting straws that are 4 inches long into 1/2-inch pieces. She has two straws. She needs twenty 1/2-inch pieces. Do
1 answer:
She doesn't have enough straws to cut 20 pieces.
<u><em>Explanation</em></u>
As the number of 1/2 inch pieces needed is 20, so the total length of all 20 pieces should be :
Now, she has two straws and the length of each straw is 4 inches.
So, the total length of two straws
<em>As, the total length of two straws is less than the total length needed , that means she doesn't have enough straws to cut 20 pieces. </em>
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notice, the gift box is just 6 rectangles stacked up to each other at the edges,
left and right, two rectangles of 32x40
top and bottom, two rectangles of 25x32
front and back, two rectangles of 25x40
so, just get the area of all 6 rectangles, add them up, and that's the "surface area" of the rectangular prism, and that's how much paper will be needed to cover it.