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Sergio [31]
3 years ago
14

Write down the formula to calculate the area of an isosceles triangle whose equal sides are 'a' unit and base is 'b'unit.​

Mathematics
1 answer:
Elena-2011 [213]3 years ago
7 0

Step-by-step explanation:

I hope this will help you..........

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Answer:

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Step-by-step explanation:

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Which of the following sets could be the sides of a right triangle?
coldgirl [10]

Answer: Choice B) {3, 5, sqrt(34)}

=====================================

Explanation:

We can only have a right triangle if and only if a^2+b^2 = c^2 is a true equation. The 'c' is the longest side, aka hypotenuse. The legs 'a' and 'b' can be in any order you want.

-----------

For choice A,

a = 2

b = 3

c = sqrt(10)

So,

a^2+b^2 = 2^2+3^2 = 4+9 = 13

but

c^2 = (sqrt(10))^2 = 10

which is not equal to 13 from above. Cross choice A off the list.

-----------

Checking choice B

a = 3

b = 5

c = sqrt(34)

Square each equation

a^2 = 3^2 = 9

b^2 = 5^2 = 25

c^2 = (sqrt(34))^2 = 34

We can see that

a^2+b^2 = 9+25 = 34

which is exactly equal to c^2 above. This confirms the answer.

-----------

Let's check choice C

a = 5, b = 8, c = 12

a^2 = 25, b^2 = 64, c^2 = 144

So,

a^2+b^2 = c^2

25+64 = 144

89 = 144

which is a false equation allowing us to cross choice C off the list.

7 0
3 years ago
In the figure, m ║ n and p is a transversal. Which of the following are alternate interior angles?
Lyrx [107]
The answer is c. Because there inside and opposite
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BigorU [14]

something through 1-10. i think its 7 but i rlly dont know. Sry.

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The surface area of 3ft, 7ft, 2ft
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Answer: 82 ft squared

Step-by-step explanation: The surface area is 2( wl + hl + hw)

so the width is 2 the length is 7 and the height is 3

so it's 2( 14 + 21 + 6) = 2(41) = 82

6 0
3 years ago
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