A scale drawing of a playground is shown below. PLAYGROUND
2.5 in.
KEY
1 in. = 40 ft.
3 in.
1 in.
4.5 in.
Using this scale, what is the area, in square feet, of the playground?
o 540 square feet
o 450 square feet
o 440 square feet
o 380 square feet
HELP

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

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What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters