toxsicity
01.12.2019 •
Mathematics
The square shown below in figure 1 has side length 24 cm. it is divided into four
congruent quadrilaterals and rearranged to form the square in figure 2. the
square in the center of figure 2 has side length 10 cm. what is the side length of
the larger square in figure 2?
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Ответ:
its area is (24cm x 24cm) = 576 cm² .
So the area of all the shaded pieces is 576 cm², no matter
how they're cut up and jumbled around. When they're moved
over and re-arranged to make the big square, the shaded part
is still 576 cm² .
The little white square in the center has side length of 10 cm,
so the area of that little square is (10cm x 10cm) = 100 cm².
Now, the total area of the big square is made up of 576 cm²
in the shaded parts, and 100 cm² in the white part.
Total area of the big square = (576cm² + 100cm²) = 676 cm² .
Since the big square is a square, its area is (side-length)² ,
and its side-length is √(area) .
Side length = √(676 cm²) = 26 cm .
Ответ:
i hope this helps!