Question

Areas of paralleolgrams and triangles?

Answer 1

The area of parallelogram is

$A=base\cdot height$.

If base has length 9.9 in and height has length 5.5 in, then the area is $A=9.9\cdot 5.5=54.45$ sq. in.

When base has length 11 in and height is unknown h, then $A=11\cdot h$.

Since the area is 54.45 sq. in., then

$54.45=11h,\\ \\ h=\dfrac{54.45}{11} =4.95$ in.

Answer: h=4.95 in.