What is the area of triangle EFG? This is Geometry by the way. I accept image attachments as long as they are clear. Immediate answers are appreciated.

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

True or false? a circle could be circumscribed about the quadrilateral below.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days