All you have to do is multiply it then you get the answer
Answer:
A = 35 square units
Step-by-step explanation:
Formula to calculate the distance between two points
and
is,
d = 
Length of the segment between A(2, 2) and B(9, 2) =
= 7 units
Length of the segment between B(9, 2) and C(9, -3) = 
= 5 units
Length of the segment between C(9, -3) and D(2, -3) = 
= 7 units
Length of the segment between A(2, 2) and D(2, -3) = 
= 5 units
Therefore, given polygon is a rectangle.
Area of the rectangle = length × width
= 7 × 5
= 35 square units
Amu of unknown element = 40 - (20% * 40)
= 40 - 8
= 38 amu
therefore, the approximate weight of the unknown element is 38 amu.
hope this helps.
32 performance = $295.55
1 performance = 299.55 ÷ 32 = $9.24
4 performance = $9.24 x 4 = $36.96
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Answer: It will cost $36.96.
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