21.the answer is 79.25
the area of the rectangle :
[tex]10 \times 4 = 40[/tex]
the area of the semicircle:
[tex] \frac{5 \times 5 \times \pi}{2} = \frac{25 \times 3.14}{2 } = \frac{78.5}{2} = 39.25[/tex]
the area of the whole shape:
[tex]40 + 39.25 = 79.25[/tex]
22.the answer is 29
area of the square:
[tex]2 \times 2 = 4[/tex]
area of the parallelogram:
[tex]5 \times 3 = 15[/tex]
area of the rectangle :
[tex]5 \times 2 = 10[/tex]
area of the whole shape :
[tex]4 + 15 + 10 = 29[/tex]
good luck
