Respuesta :

320 centimeters squared
Given,
H= 4cm
L= 10cm
B= 8 cm

We know that,
Total Surface Area= Area of Roof + Area of four walls + Area of Floor

TSA= L*B + 4(L*H) + L*B
10*8 + 4(10*4) + 10*8
80 + 4(40) + 80
80+ 160 + 80
160 + 160

320 cm^2.