Question

Show that
$s(( \frac{r1 - r}{a} ) + ( \frac{r2 - r}{b} ) +( \frac{r3 - r}{c} ))$
= r1+r2+r3 ; where r, r1, r2, r3 are radius​

Answer 1

Answer:

21 r

54r

90 r

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