Question

the area of a parallelogram is 72 cm^2 and its altitude is twice the corresponding base. the length of the base is

Answer 1

Base×height= area of parallelogram
B×H =72
H = 2B
2B×B=72
2B^2=72
B^2= 36
B=6cm

Answer 2

area of parallelogram=B×H
B×H=72
b×2b=72
b^2=36
b=√36
b=6

so convert for length
so
2×6=12