Answer:
She need 7 bags to cover the garden
Step-by-step explanation:
Diameter of circular garden = 16 feet
Radius of circular garden =
Area of circular garden =
30 sq.feet covered by no. of bags = 1
200.96 sq.feet covered by no. of bags = 
Hence She need 7 bags to cover the garden
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That would be zero.
Obtuse means more than 90 degrees. A triangle's angles add up to 180 degrees so can't have two obtuse angles.
30% , 3/5 , 0.8
Checking:
30%=30%
3/5=60%
0.8=80%