Chapter 1 - Introduction to Algebraic Expressions - 1.3 Fraction Notation - 1.3 Exercise Set - Page 28: 102

$A=\frac{25}{28}m^{2}$

$h=\frac{5}{4}m$ $b=\frac{10}{7}m$ $A=\frac{1}{2}hb$ $A=\frac{1}{2}(\frac{5}{4}m)(\frac{10}{7}m)$ $A=(\frac{1}{2}\times\frac{5}{4}\times\frac{10}{7})\times(m\times m)$ $A=\frac{50}{56}m^{2}$ $$A=\frac{25}{28}m^{2}$$