Question

if h=12cm l=13cm find r=?

Answer 1

Hey...

$r = \sqrt({ {l}^{2} } - {h}^{2} ) \\ r = \sqrt({169} - 144) \\ r = \sqrt{25} = 5cm$
Thanks☺

Answer 2

l² = h² + r²
13² = 12² + r²
r²= 169 - 144
r² = 25
r = ✓25
r= 5 cm