In parallelogram abcd, ad = 12 in, m∠c = 46º, m∠dba = 72º. find the area of abcd

The area of   parallelogram ABCD  is

Explanation:

Given:

AD = 12 in

To Find:

The area of   parallelogram ABCD=?  

Solution:

When we construct the parallelogram with the given data, we get a parallelogram formed by 12 cm as one side and an angle with 46 degrees.  

The area of the parallelogram can be calculated by

Substituting the value of a=12  we have

To find  the value of b,

We know that area of a triangle can be expressed as,

So,

Cancelling BD and 2 on both sides we get,  

Therefore,

Substituting the value of b,

=78.42  

So the area of the parallelogram is

i think 5 miles per hour

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x