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Harman [31]
3 years ago
5

The picture shows a feeding trough that is shaped like a right prism. (Picture is shown at the bottom!!)

Mathematics
1 answer:
AlexFokin [52]3 years ago
4 0
Height of the trapezoids = sqrt (17^2 - 8^2) = 15cms
base = 19 cms

(b) area of each trapezoid =  15/2 (35 + 19) =  405 cm^2

Total area painted blue = 2*405 = 810 cm^2

(c)  length of the edges of one trapezoid = 35 + 19 + 2(17) = 88 cms
So one piece of  sandpaper ( can sand up to 80 cm) will not be enough to sand all of the edges.
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