What is the area of the shaded part of the figure?
a.
112.5 mm²
b.
225 mm²
c.
450 mm²
d.
675 mm²

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it. find the area of the sidewalk.