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IRINA_888 [86]
2 years ago
8

What is the area of half circle with a radius of 40 cm? PLEASE HELPPP ILL GIVE BRAINLIEST

Mathematics
1 answer:
madam [21]2 years ago
3 0

Answer:

0.5027 square meters

Step-by-step explanation:

cm2

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ioda
Let width of the floor be x feet, them area is
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x^2 + 2x - 168 = 0
(x - 12)(x + 14) - 0
so x = 12
the floor is 12 ft by 10 ft

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3 years ago
A falcon can fly 322 km/h how many meters per hour can the falcon fly
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322 km/h = 322000 meters/h

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3 years ago
Help will give brainliest
Marta_Voda [28]

Answer: 12 miles equals 1 inch

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4 0
3 years ago
The triangles ABC and DFG are similar and the ratio of their corresponding sides is 6:5. The area of the triangle ABC is greater
Naya [18.7K]

Answer:

The Area of Δ DFG is 175 cm²

The Area of Δ ABC is 252 cm²

Step-by-step explanation:

Given as :

The Δ ABC is similar to the Δ DFG

The area of the triangle ABC is greater than the area of the triangle DFG by 77 cm²

Let The area of  Δ DFG = x cm²

So, The area of  Δ ABC = ( 77 + x ) cm²

The ratio of corresponding sides of  Δ ABC and  Δ DEF = 6 : 5

Let The side AB = 6 y

And The side DE = 5 y

Now,<u> from The property of similar Triangles</u>

\dfrac{area ABC}{area DFG}=\dfrac{AB^{2} }{DE^{2} }

I.e \dfrac{77+x}{x} = \dfrac{(6 y)^{2} }{(5y)^{2} }

Or, \dfrac{77+x}{x} = \dfrac{36}{25}

Or, 25 × (77 + x ) = 36 x

Or,  25 × 77 + 25 x = 36 x

Or,  25 × 77 = 36 x - 25 x

Or, 11 x =  25 × 77

∴  x = \frac{25\times 77}{11}

I.e x = 175 cm²

So,The Area of Δ DFG = x  = 175 cm²

And The Area of Δ ABC = x + 77  = 175 + 77  = 252 cm²

Hence, The Area of Δ DFG is 175 cm²

And The Area of Δ ABC is 252 cm²    Answer

4 0
3 years ago
Please help the teacher doesn’t teach and i just need to pass this class
Aloiza [94]

ANSWER IS 73 DEGREE

BECAUSE IF WE WILL ADD 42 AND 65 WE WILL GET 107

THEN WE HAVE TO SUBTRACT 180 FROM 107

WE WILL GET 73

HOPE IT WILL HELP YOU

3 0
3 years ago
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