Question

Porfaa doy corazón y corona :)

Answer 1

Explicación paso a paso:

1. $(\frac{31}{2} )^{2}$ * $(\frac{25}{2} )^{2}$ = $\frac{(31*25)^{2} }{2}$ = $\frac{(775)^{2} }{2}$dm = $387,5^{2}$dm

2. $(\frac{15}{2} )^{2}$ * $(\frac{19}{2} )^{2}$ +  $(\frac{19}{2} )^{2}$ = $(\frac{38}{2} )^{2}$ * $(\frac{15\\}{2} )^{2}$= $\frac{(38*15)^{2} }{2}$ = $\frac{(570)^{2} }{2}$dm = $285^{2}$dm

3. $(\frac{19}{2} )^{2}$ * $(\frac{15}{2} )^{2}$ = $\frac{(19*15)^{2} }{2}$ = $\frac{(285)^{2} }{2}$dm = $142.5^{2}$dm

OPERACION:

b x h

base por altura