8:24
4:12
100:300
All you have to do is multiply both sides by the same number to get an equivalent ratio.
The first two were negative integers and the quotient is therefor a positive integer (Two negatives equal a positive)
Answer:
use the formula given in the pic and you will get the answer
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 !!