What is the total area of the following composite figure?

54.28 ft2
60.56 ft2
73.12 ft2
98.24 ft2

A. 54.28 ft^2

Step-by-step explanation:

Area of the parallelogram = 48 ft^2

Area of the semicircles = 6.28 ft^2

A = π r^2

A = 3.14 (2)

A = 3.14 (4)

A = 12.56

12.56 ÷ 2 = 6.28 ft^2

48 + 6.28 = 54.28 ft^2

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."