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mars1129 [50]
3 years ago
7

An archeologist discovered a broken piece of what appeared to be a plate. She measured chord AC from the edge of the break to be

8 inches. She also measured the perpendicular distance from the edge of the plate to the chord, BE to be 2.5 inches. What is the diameter of the plate?

Mathematics
1 answer:
professor190 [17]3 years ago
8 0
We know that

AE*EC=DE*EB-----------> <span>String theorem

AC=8 in----------> AE=AC/2----------> AE=4 in
EC=AE-----------> EC=4 in
BE=2.5 in
DE=?
DE=(AE*EC)/EB----------> DE=</span>(4*4)/2.5---------> DE=6.4 in
<span>
then 

diameter=DE+EB--------> 6.4+2.5=8.9 in

the answer is
the diameter is 8.9 in

</span>
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