Answer:
21 cm²
Step-by-step explanation:
A = (b + B)×h/2
= (5 + 9)×3/2
= 14×3/2
= 7×3
= 21 cm²
0
12 1/2 kg
Step-by-step explanat
y= 3/2x+40
y= rise/run+ y-intercept