Answer:
161.1 m² (1 dp)
Step-by-step explanation:
Area of a triangle = 1/2 x base x height
⇒ area = 1/2 x 12 x (20 - 12) = 48 m²
Area of a quarter circle =
⇒ area = 1/4 x x 12² = 113.1 m² (1 dp)
Total area = 48 + 113.1 = 161.1 m² (1 dp)
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1 answer:
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Answer:
x = 12
∠A = 144
Step-by-step explanation:
+ We have: ∠A = ∠C (alternate interior)
∠D = ∠C ( vertically opposite angles)
=> ∠A = ∠C (because = ∠C)
=> 10x + 24 = 6x + 72
=> 10x - 6x = 72 - 24
4x = 48
x = 12
+ ∠A = 10x + 24
∠A = 10 x 12 + 24
∠A = 144
