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3 years ago

Four pencils are held together with a band

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

8 0

Answer:

Are the pencils side by side or are they 2 x 2?

If they are side by side, then the band like a rectangle

but two of the sides are rounded.

In that case, The length is 10x 4 = 40.

The width is a half circle with diameter 10, which has

a circumference (perimeter) of 1/2*PI*10 = 5 * pi.

The total length of the band is 2*40 + 2*5*pi = 80 + 10*pi

Step-by-step explanation:

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