Answer:
46?
Step-by-step explanation:
Area is trapezium =
A=1/2h(a+b)
84=1/2(6)(7+b)
84=3(7+b)
84=21+3b
3b=84-21
B=63/3
B= 21 cm
I’m sorry if my answer turned out to be wrong but I tried my best so best of luck !!
The answer is letter c, also just a tip, all i had to do was ask siri :)
