6000 - 1800 = 4200
4200/4 = 1050
so she donated 25% to charity
Answer:
i think its a trapazoid
Step-by-step explanation:
Make the internet a fraction and then multiply them
Answer:
Step-by-step explanation:
Given:

To find 
Using trigonometric relations for sums and differences of squares of the ratios.
We know:

Plugging in
in the above relation.

Subtracting both sides by 0.75.


Taking square root both sides.

∴
(Answer)