Find the perimeter of the rectangle below

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

What is sin 7x/4 ? i need on this urgent trig