Given the two concentric circles with center H below, find the area of the shaded region. Round your answer to the nearest tenth
1 answer:
Answer:
A ≈ 194.8 units²
Step-by-step explanation:
the shaded area (A) is calculated as
A = area of outer circle - area of inner circle
= πr₁² - πr₂² (r₁ is outer radius and r₂ the inner radius )
= π × 13.5² - π × 4.5²
= π(13.5² - 4.5²)
= π(182.25 - 20.25)
= π × 62
≈ 194.8 units² ( to the nearest tenth )
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1.5x + 7 = 20.5
First subtract 7 from both sides
1.5x = 13.5
Then divide both sides by 1.5
x = 9
Let me know in comments if you have questions
Answer:
x=-5
Step-by-step explanation:
45÷-9=-5
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Answer:
1/3=33.3%
Step-by-step explanation:
(120-80)/120=40/120=1/3
