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Find Radius :
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Radius of the semicircle = 10 ÷ 2 = 5cm
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Find Area of the semi circle :
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Area of the semi circle = 1/2 πr²
Area of the semi circle = 1/2 x π x (5)²
Area of the semi circle = 12.5π cm²
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Find Radius :
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Radius of the inner circle = 5 ÷ 2 = 2.5 cm
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Find area of inner circle :
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Area of the inner circle = πr²
Area of the inner circle = π x (2.5)²
Area of the inner circle = 6.25π
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Area of the shaded region :
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Area of the shaded region = 12.5π - 6.25π
Area of the shaded region = 6.25π
Area of the shaded region = 19.63 cm²
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Answer: Area of the shaded region = 19.63 cm²
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3/10 × 10 would be 30/100 which would make it easy to add to 21/100 and that would = 51/100
Answer:
Yes it is.
Step-by-step explanation:
Just multiply everything by 2.
Answer:
x=-2
Step-by-step explanation:
−5x−2+2x=−2x+4+2x
−3x−2=4
Step 2: Add 2 to both sides.
−3x−2+2=4+2
−3x=6
Step 3: Divide both sides by -3.
−3x
−3
=
6
−3
x=−2
9514 1404 393
Answer:
see attached
Step-by-step explanation:
It is helpful to understand that the product of the binomial factors is ...
(ax +b)(cx +d) = ac·x² +(ad+bc)x +bd
For these problems you only need to look at the constant and the leading coefficient to find the missing values.
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1. d = 8/-4 = -2
2. b = -24/(3·2·d) = -4; c = 3/(3·a) = 1
3. a = 2/c = 1; d = -24/b = 6