How can you decompose the composite figure to determine its area?
a)as a pentagon and four semicircles
b)as two rectangles and four circles
c)as a square and four semicircles
d)as two triangles and four circles
c : a square and four semi circles

For this case the first thing you should do is observe that the diameter of the four semicircles is the same.

Therefore, we can decompose the figure as follows:

1) We draw the diameters of the four semicircles to form a square.

2) We divide the figure into a square and four semicircles

3) The total area is the sum of the area of the square, plus the area of the 4 semicircles.

c)as a square and four semicircles

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared