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BARSIC [14]
3 years ago
14

Help please!!!!!!!!!

Mathematics
1 answer:
SOVA2 [1]3 years ago
6 0
Find the area of the triangles and smal ler square and add them together ; and find the area of the complete square and set them equal to each other (these are known truths)
triangle: l×w /2
square: s^2
There are 4 triangles so

4 (1/2ab)+c^2= (a+b)(a+b)
simplify

2ab+c^2= a^2+2ab+b^2
-2ab both sides

c^2=a^2+b^2

tada!! it's proven :)
You might be interested in
Find the arc length for arcs of circles as follows:
Sauron [17]

Answer:

≈ 11.78 in

Step-by-step explanation:

The arc length is calculated as

arc = circumference of circle × fraction of circle

     = 2πr × \frac{\frac{\pi }{4} }{2\pi } ( cancel 2π on numerator/ denominator )

     = 15 × \frac{\pi }{4}

     = \frac{15\pi }{4}

     ≈ 11.78 in ( to 2 dec. places )

6 0
2 years ago
A rectangular tank measuring 50 cm x 30 cm x 60 cm was completely filled with water. 1 5 of the water in the tank was transferre
Ierofanga [76]

Answer:

<em>72,000cm³</em>

Step-by-step explanation:

Volume of the rectangular tank = Length *  Width * Height

Given

Length = 50cm

Width = 30cm

Height = 60cm

Get the volume:

Volume = 50*30*60

Volume = 90,000cm³

Hence the volume of the rectangular tank is 90,000cm³.

If 1/5 of the volume of water was transferred to another tank, the volume transferred will be:

Amount transferred = 1/5 * 90,000

Amount transferred = 18000cm³

Amount left in the tank = 90,000 - 18,000

<em>Amount of water left in the tank = 72,000cm³</em>

5 0
2 years ago
If m∠A =91° and m∠B = 40°, find m∠1.<br> A) 89° <br> B) 122° <br> C) 131° <br> D) 140°
Yanka [14]

Answer: is that a high school math it looks hard to me

Step-by-step explanation??

6 0
3 years ago
Find the product 1/1/4OOOOJOOOO...!!! Casi todas las cuentas de facebook están siendo duplicadas. Gracias por no aceptar una nue
gizmo_the_mogwai [7]
Okay, tu no tienes un Facebook...tienes una pregunta?
4 0
3 years ago
4a-3b=21 true or false
Katarina [22]
True, 
4a - 3b
4(6) - 3(1)
24  - 3  =  21
7 0
3 years ago
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