The ratio of heights = ratio of the square roots of the areas because area is 2 dimensional and height is one dimensional.
so required ratio is sqrt 40pi : = sqrt40:sqrt80 = sqrt1: sqrt2 = sqrt (1/2) = 0.7071 to 4 significant figures
Answer:
40 grams of 13% alcohol solution and 10 grams of 18% alcohol solution.
Step-by-step explanation:
13%(x) + 18%(50-x) = 14%*50g Multiply them all
0.13x + (9-0.18x) = 7
0.13x-0.18x + 9 = 7 Simplify the equation and subtract 0.13x from 0.18x
9-0.05x = 7 Add 0.05x to each side
9 = 7+0.05x Subtract 7 from both sides
0.05x = 2 Multiply each side by 100
5x = 200 Divide both sides by 5
x = 40
50 - 40 = 10
40 grams and 10 grams
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The area of the garden is 120 square metre
<h2>
Explanation:</h2>
The picture of the garden is shown below. In this problem, we have:
Recall that the area of a square is given by:

On the other hand, the area of a rectangle is given by:

Therefore:
FOR THE SQUARE:

FOR THE RECTANGLE 1:

FOR THE RECTANGLE 2:

Finally, the area of a garden is the sum of the three areas:

<h2>Learn more:</h2>
Area of a pizza: brainly.com/question/12878495
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