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nlexa [21]
2 years ago
10

HELP if I don’t pass this class I won’t graduate

Mathematics
1 answer:
lara [203]2 years ago
4 0

Answer:

Step-by-step explanation:

In ΔABC,

∠ABC + ∠BAC + ∠BCA = 180  {ANGLE SUM PROPERTY OF TRIANGLE}

41 +  102 + ∠BCA = 180

143 + ∠BCA = 180

∠BCA = 180 - 143

∠BCA = 37

∠CAE = ∠BCA     {Alternate interior angles are equal}

x = 37°

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Nadya [2.5K]

Answer:

The \ area \ of \ the \ figure = 4\dfrac{1}{2} \cdot \pi + 18 \ cm^2

Step-by-step explanation:

Given that the figure is made up of portion of a square and a semicircle, we have;

BC ≅ AB = 6 cm

The area of semicircle BC with radius BC/2 = 3 is 1/2×π×r² = 1/2×π×3² = 4.5·π cm²

Triangle ABC = 1/2 × Area of square  from which ABC is cut

The area of triangle ABC = 1/2×Base ×Height = 1/2×AB×BC = 1/2×6×6 = 18 cm²

The area of the figure = The area of semicircle BC + The area of triangle ABC

The area of the figure = 4.5·π cm² + 18 cm² = \dfrac{9 \cdot \pi +36}{2} \ cm^2.

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3 years ago
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frez [133]
Answer:

The circumference is 42.54
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Answer:

5

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