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3 years ago

What is the area of a semicircle with diameter of 6

2 answers:

7 0

Your answer is 14.13.
Heres how I got it:
First, the formula for area of a semi circle is 3.14 x r^2 and divide by two.
To find the radius, we need to divide the diameter by two, which is 3.
Now, lets plug in our numbers.
3.14 x 3^2/2
3.14 x 9/2
28.26/2
A=14.13

pogonyaev3 years ago

5 0

Area of circle = pi (d/2)^2
area of semi-circle =0.5* pi (d/2)^2
=0.5* pi (6/2)^2
=14.14

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d(4) = 64

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Using the recursive formula

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$T_b=(x-3)\textdegree$

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let x° be temperature when he woke up. Given that the temperature rose by 11° then later dropped by 14°. Also let $T_b$ be temperature at time she went to bed.

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$T_b=x\textdegree\pm\bigtriangleup T\textdegree\\\\T_b=x\textdegree+11\textdegree-14\textdegree\\\\T_b=(x-3)\textdegree$

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