C-05-Q151mediumsingle_mcq

A circle of diameter $20$ has a chord such that the perpendicular from centre is $2$ less than the chord-length. Length of the chord is—

a $12$
b $14$
c $16$
d $18$

ব্যাখ্যা

With diameter $20$ the radius is $10$ . A chord of $16$ has half-length $8$ , and the perpendicular distance from the centre is $8-2=6$ ; these satisfy $8^2+6^2=10^2$ , exactly matching the radius, so $16$ is correct.

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Equations in One Variable — সব প্রশ্ন দেখুন (170টি) →

A circle of diameter $20$ has a chord such that the perpendicular from centre is $2$ less than the chord-length. Length of the chord is—

12

14

16

18

A circle of diameter 202020 has a chord such that the perpendicular from centre is 222 less than the chord-length. Length of the chord is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

A circle of diameter 202020 has a chord such that the perpendicular from centre is 222 less than the chord-length. Length of the chord is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

A circle of diameter $20$ has a chord such that the perpendicular from centre is $2$ less than the chord-length. Length of the chord is—

A circle of diameter $20$ has a chord such that the perpendicular from centre is $2$ less than the chord-length. Length of the chord is—