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allochka39001 [22]
3 years ago
12

Find the area of the shaded region

Mathematics
1 answer:
kodGreya [7K]3 years ago
7 0

Answer:  21.994 cm²

Step-by-step explanation:

Area of the shaded region = Area of the bigger circle - the areas of the two smaller circles.

Formula for finding area of a circle       =  πr² where π is a constants . It has value of         22/7 or 3.142

Now area of the bigger circle                = 3.142 x 3²

                                                                  = 3.142 x 9

                                                                  = 28.278 cm²                                       Now are of the two smaller triangle        = 3.142 x 1² x 2

                                                                   = 6.284 cm².

Therefore are of the shaded region        = 28.278 - 6.284

                                                                   = 21.994 cm²

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rodikova [14]

Answer:

√27

Step-by-step explanation:

The triangles of the pyramid are equilateral triangles with sides of 6''.

Dividing a triangle into two equal parts we get two congruent right triangles, with a hypotenuse of 6'', one leg of 3'', and the other leg is the slant height (s). From Pythagorean theorem:

3² + s² = 6²

s² = 6² - 3²

s = √27

8 0
3 years ago
HH represents the height of the tree (in centimeters), t tt years since Renata moved in. H = 210 + 33 t H=210+33tH, equals, 210,
Jet001 [13]

Answer:

Therefore the rate of growth of the tree is 33 cm/ yr.

Step-by-step explanation:

Given that,

The height of the tree is

H= 210 +33t

Here H represent the height of tree in cm and t is time in year.

The rate of growth is the first order derivative of the H with respect to time.

i.e The rate of growth  =\frac{dH}{dt}

∴H= 210 +33t

Differentiating with respect to t

\frac{dH}{dt} =0 +33

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Therefore the rate of growth of the tree is 33 cm/ yr.

7 0
3 years ago
20 POINTS!!!!!!!!
lorasvet [3.4K]

You are asked to find the missing value in

... 40 + ? = 70

given that it is also the solution to

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Either way, you subtract the constant that is on the same side of the equation as the unknown.

... 40 + ? - 40 = 70 - 40

... ? = 30 . . . . the missing value

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You can check to see if this also satisfies the equation

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7 0
3 years ago
Please !!!!!! Help me
PtichkaEL [24]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Verizon [17]

Answer:

nice

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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