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jacobhawkins112471
06.09.2020 •
Mathematics
Is this a trapezoid? yes or no
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Ответ:
yes
Step-by-step explanation:
the dark orange is if that is what you are referring to.
Ответ:
for these questions, i assumed the figure had some symmetric properties.
for the perimeter, see figure 1 attached.
perimeter is around 53.65 cm.
for the difference of the shaded area of a and the sum of the shaded areas of b and c, refer to figure 2 attached.
we first took one side of the square, rotated it until it touched the intersection as shown. this formed both a triangle and a sector of a circle.
we used formulas for those, and then, since it is symmetric (if you do the same thing, you'd get the same result), we found that
then we determined new regions d and e so that we can use subtraction to determine the area of a.
the sum of the shades ares of b and c
difference between shaded area of a and b+c:
22.72 cm²
(i think actual answer without using 3.14 for pi is around 22.796 cm²)