Answer:
(+6) + (-11) + (+5)+(-7)
(6) + (-11) + (5) - (7)
6 - 11 + 5 - 7
(6 + 5) + (-11 - 7)
11 - 18
= -7
B 5 1/2
Hope it helped!!!
Step-by-step explanation:
The height of parallelogram is 51.87 cm
Let The height of a parallelogram = a cm
Then
The base of a parallelogram = 3a cm
So by the given condition
3a×a = 897
3a^2 = 897
a^2 = 897/3
a^2 = 299
a = 17.29
So the height of parallelogram = 3×17.29= 51.87 cm