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zlopas [31]
3 years ago
5

Find the area of the triangle below. Be sure to include the correct unit in your answer.

Mathematics
2 answers:
natita [175]3 years ago
6 0

problem decoded dude

thank and follow me

lara31 [8.8K]3 years ago
3 0

Answer:

80.5 cm^2

Step-by-step explanation:

h for height=7cm

b for base = 23 cm

A=hb/2

A=7*23/2=161/2= 80.5 cm^2

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What is the percentage change ? 54 decreased to 32?
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21

Step-by-step explanation:

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When you skip count by 36 and 60 can it go into 144
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3 years ago
Given that € 1 = £0.72<br> a) How much is € 410 in £?<br> b) What is the £ to € exchange rate?
Alekssandra [29.7K]

Answer:

a) 295.2

Step-by-step explanation:

a) cross multiplication method

€1=£0.72

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8 0
3 years ago
Hello everyone, could you please solve this problem step by step. I don't have the exact solution and there are no options for i
lara31 [8.8K]

Answer:

<em>The area of the shaded part  = 61.46</em>

<em />

Step-by-step explanation:

Assume the hypotenuse of the triangle is c (c>0)

As the triangle inscribed in the semi circle is the right angle triangle, its hypotenuse is equal to the diameter of the circle.

The hypotenuse of the triangle can be calculated by Pythagoras theorem as following: c^{2} =a^{2} +b^{2} =(2\sqrt{5}) ^{2} + (4\sqrt{5}) ^{2} = 20 + 80 = 100

=> c = 10

So that the semi circle has the diameter = 10 => its radius = 5

  • The total area of 2 semi circles is equal to the area of the circle with radius =5

    => The total area of 2 semi circles is: \pi x 5^{2} = 25\pi

  • The area of a triangle inscribed in the semi circle is: 1/2 x a x b = 1/2 x 2\sqrt{5\\ x 4\sqrt{5} = 20

    => The area of 2 triangles inscribed in 2 semi circles is: 2 x 20 = 40

  • The area of the square is: c^{2} = 10^{2} =100

It can be seen that:

<em>The area of the shaded part = The area of the square - The total area of 2 semi circles + The total are of 2 triangles inscribed in semi circles </em>

<em>= 100 -  25</em>\pi<em> + 40 = 61.46</em>

6 0
3 years ago
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