I’ll give points + brainalist for correct answer

Step-by-step explanation:

2 opposite semicircle are same

diameter = 9m

radius = 4.5m --- (diameter = 1/2radius)

area of semicircle = 1/2 × π × radius²

= 1/2 × 3.14 × 4.5×4.5

= 31.79m²

2 semicircles area = 31.79 × 2

= 63.8m²

other 2 opposite semicircle are same

diameter = 20m

radius = 10m --- (diameter = 1/2radius)

area of semicircle = 1/2 × π × radius²

= 1/2 × 3.14 × 10×10

= 157m²

2 semicircles area = 157 × 2

= 314m²

length = 20m ( given )

breadth = 9m ( given )

area = length × breadth

= 20 × 9

= 180m²

AREA of whole figure = 63.8 + 314 + 180

= 557.8m²

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315