Question

Abc is right triangle right angled at a,with ab=21 cm and ac=52cm. With the vertices a,b,c as centres arcs arc drawn

Answer 1

by pythagoras theorem
(hypotenus)sq=(base)sq+(altitude)sq
${21}^{2} + {52}^{2} = 3145 \\ \sqrt{3145 } = 56cm$
so hypotenus is 56cm