16 POINTS!! The solid in the diagram has a surface area of 18 units2. If a cube is added on the green face, what will the new su
rface area be? A) 20 units2 B) 21 units2 C) 22 units2 D) 23 units2
1 answer:
The complete question in the attached figure
Let
x------> length side of a cube
we have that
[surface area original]=18 units²
surface area original=x²*[number of faces]
number of faces=2*[4+4+1]-----> 18 faces
surface area original=x²*[18]
18=18*x²-------> x²=18/18---------> x=1 unit
<span>If a cube is added on the green face,the new surface area will be
</span>18+4*[area of one faces]-----> 18+4*1²----> 22 units²
the answer is
22 units²
Let
x------> length side of a cube
we have that
[surface area original]=18 units²
surface area original=x²*[number of faces]
number of faces=2*[4+4+1]-----> 18 faces
surface area original=x²*[18]
18=18*x²-------> x²=18/18---------> x=1 unit
<span>If a cube is added on the green face,the new surface area will be
</span>18+4*[area of one faces]-----> 18+4*1²----> 22 units²
the answer is
22 units²
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Answer:
<u>28.8%</u> of the fruit she bought on Tuesday was apples.
Step-by-step explanation:
Given:
On Monday, a fruit vendor bought 80 pieces of fruit to sell at her market, 35%, percent of which were apples and the rest of which were oranges. On Tuesday, the vendor bought the same number of oranges, but she only bought 73 pieces of fruit.
Now, to find the percentage of apples among the fruit she bought on Tuesday.
So, on Monday the fruit vendor bought 80 pieces of fruit.
35%, percent of which were apples.
So, the number of apples in the fruit are:
Thus, there are 28 apples.
Now, the rest are oranges, so we find the number of oranges by subtracting 28 apples from 80 pieces of fruit:
As, there were 52 oranges in the fruit on Monday.
And, the vendor bought same number of oranges on Tuesday.
<u><em>So, total number of fruit pieces she bought on Tuesday was 73.</em></u>
Now, to get the number of apples she bought on Tuesday we subtract number of oranges from the total number of pieces of fruit:
<u><em>Hence, the apples she bought on Tuesday was 21.</em></u>
Now, to get the percentage of fruit she bought on Tuesday was apples:
Therefore, 28.8% of the fruit she bought on Tuesday was apples.