Question

calcula el area lateral y el area de cada uno de estos poliedros

Answer 1

Hip = raiz( 3^2 + 4^2) = raiz(25) = 5 cm 

Area_lat = 3 cm * 7 cm + 4 cm * 7 cm + 5 cm * 7 cm 

Area_lat = 12 cm * 7 cm = 84 cm^2 

Area_base = (1/2) 3 cm * 4 cm = 6 cm^2 

Area_total = 84 cm^2 + 6 cm^2 = 90 cm^2 
============================== 

2) 
Area_lat = 4 * (1/2) * 6 cm * 5 cm = 60 cm^2 

Area_base = 6 cm * 6 cm = 36 cm^2 

Area_total = 60 cm^2 + 36 cm^2 = 96 cm^2 
=================================== 

3) 
Area_lat = 4 * (1/2) * (5cm+2cm) * 7 cm = 98 cm^2 

Area_base = 5 cm * 5 cm = 25 cm^2 

Area_total = 98 cm^2 + 25 cm^2 = 123 cm^2 
=================================== 


Saludos