Find the area of a circle with a radius of .5 m

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.

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Lines d, e, and f are parallel. that means they have the same slope. each of these lines has a slope of -3. enter numbers to complete an equation fir each line