Explanation:
☆ In the figure above, arc SBT is one quarter of a circle with center R and radius 6. If the length plus the width of rectangle ABCR is 8, then the perimeter of the shaded region is —
ANSWER :–
LET AR = a and RC = b
We know that –
perimeter of quarter circle = ( 2πr ) / 4 = 3π
AND –
AS = 6 - a , CT = 6 - b , AC = RB = 6 ( radius )
➨ perimeter of the shaded region = AS+AC+CT+C(SBT)
➨ Perimeter = ( 6 - a ) + 6 + ( 6 - b ) + 3π
➨ Perimeter = 18 - ( a + b ) + 3π
● length + width = 8 ( given )
➨ Perimeter = 18 - 8 + 3π
Answer:
➨ Perimeter = 10 + 3π
~Kandy~
Hope this helps!
Brainliest Please!
The addition of sodium bicarbonate to carbon treatments is fundamental because this substance has buffer properties.
<h3>What is a buffer?</h3>
In chemistry, a buffer is any substance that may act both as an acid or base in a given solution.
Sodium bicarbonate is a fundamental buffer in biological systems because it may prevent different types of homeostatic imbalances (e.g., acidosis).
In conclusion, the addition of sodium bicarbonate to carbon treatments is fundamental because this substance has buffer properties.
Learn more about buffers here:
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#SPJ1
<h3>What is Voluntourism?</h3>
This is a word which uses a combination of the words "volunteer" and "tourism" to note how travellers participate in volunteer work in a different location.
<h3>Purposes of Voluntourism</h3>
- It is important to provide help to people who need it.
- It shows deep care for travellers or tourists to try to take care of the needs of people they barely know.
- It gives people the chance to experience a new culture.
Please note that your question is incomplete so I gave you a general overview so that you can have a better understanding of the concept.
Read more about voluntourism here:
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