Question

Help on this please

Answer 1

hey
1.)
by Pythagoras theorem
a²+b²=c²
16²+63²=c²
256+3963=c²
4219=c²
c=√4219 units
c=64.9=65(approx) units

2.) by Pythagoras theorem
c²=a²+b²
(2.9)²=a²+(2.1)²
841=a²+44.1
a²=841-44.1
a²=796.9
a=√796.9 units
a=28.229units
a=28.23 units (approx)