Respuesta :

Answer:

5.Area=1/2×b×h

Area=1/2×18×7

Area=63feet²

6.A=1/2(b1+b2)h

60=1/2(8+12)h

120=20h

h=6m

7.V=lwh

w=V/lh

w=1890/10×14

w=1890/140

w=189/14

w=17/2

w=8.5m

8.d=rt

320miles=r×5hrs

r=320/5

r=64miles/h

9.