If you subtract -9-21 and 36-56
Answer:
B
Step-by-step explanation:
Divide the sum obtained in preceding step by total number of frequencies.
let the length of each shorter side be x
length of longer side= x+14
2(x+14) + 2x = 48
2x + 28 + 2x = 48
4x + 28 = 48
4x = 48-28
4x = 20
x = 5
shorter side = 5cm