Find the volume of the composite figure if necessary on answer to the nearest 10

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?