Answer:
18.28 m
Step-by-step explanation:
Given the flower garden in the question :
The shape is composite and can be divided into 2 semicirles and rectangle
The perimeter of a semicircle is the Circumference of the semicircle = πr
Hence, 2 semicirles = 2πr
Radius of semicircle = 2/2 = 1
Perimeter = 2 * 3.14 * 1² = 2 * 3.14 * 1 = 6.28 m
The perimeter of rectangle; length and width are 6m and 2 m respectively :
Perimeter of rectangle = 2(l + w) = 2(4+2) = 2(6) = 12m
Tve perimeter of garden = 6.28 + 12 = 18.28 m
The answer is <a is congruent to < d
because you already have <abe = <dbe
<h2>|| <u>Question</u> ||</h2>
John purchased 24 chocolates for Rs.96. How many chocolates can be purchased for Rs.72?
<h2>|| <u>Answer</u> ||</h2>
John purchased 24 chocolates = Rs.96.
Chocolates can be purchased for Rs.72 = x
<h3>
</h3>
24:96 = x:72
Means = Extreams
96 × x = 24 × 72
<h3>
</h3>
( 12 × 2 = 24, 12 × 8 = 96 )
<h3>
</h3>
(8 × 1 = 8, 8 × 9 = 72)
<h3>
</h3><h3>
</h3><h3>
</h3>
Therefore, 18 chocolates can be purchased for Rs.72
We can find the answer by solving the two equations simultaneously.
equation 1: y = -0.4x^2 +3xequation 2: x + y = 10
We need to write equation to with y as the subject:equation 2: y = 10 - x
equation 1 = equation 2:
10 - x = -0.4x^2 + 3x0.4x^2 - 4x + 10 = 02x^2 - 20 + 50 = 0(2x - 10)(x - 5) = 0x = -10/2 or x = 5
But x >= 0 (the question says it's a height above the water), so x = 5
Substituting x = 5 into one of the equations:
y = 10 - x
y = 10 - 5
y = 5
So the answer is C
