Question

need help with math

Answer 1

\(\Huge{Parallelogram~Area=bh}\)

\(\Huge{Trapezoid~Area=\frac{(b_{1}+b_{2})}{2} \times h}\)

Answer 2

for which one

Answer 3

For 24 we would use the parallelogram area formula....

For 26 we would use the trapezoid area formula....

Here is how to solve for number 26....

Answer 4

For 25 we would draw out the isoceles triangle...

To find the height we would input what we know into the formula for finding the area of a triangle...

\(\Huge{150=\frac{12 \times h}{2}}\)

So we work backwards...we would first multiply by 2...

\(\Huge{300=12 \times h}\)

Next we would divide by 12...

\(\Huge{\frac{300}{12}=h=25}\)

So we now know that h equals 25 now to find the leg we would have to apply pythagorean theorem...

\(\Huge{25^{2}+12^{2}=c^{2}}\)

Answer 5

Ooops wait....

\(\Huge{25^{2}+6^{2}=c^{2}}\)

Answer 6

660^2

Answer 7

@marcelie

Answer 8

@mathmate

Answer 9

\(\Large {25^{2}+6^{2}=c^{2}}\)
what you got was actually \(c^2 = 661\)
So take the square-root of 660 to find c, which is the side length.

Answer 10

oh that's what I meant sorry and I got 436957

Answer 11

@mathmate

Answer 12

Sorry, it's the square-root of 661 (not the square).

Answer 13

25.70992026 is what I got

Answer 14

so its 25.7 @mathmate

Answer 15

I got the same answer! Well done! :)

Answer 16

yay can you help m with the others

Answer 17

because I really need help with these ones

Answer 18

@563blackghost has already taken care of the rest.
This is the last one she didn't have time to finish.

Answer 19

I know but I don't really understand it @mathmate

Answer 20

I got 24 I just need 26 which I what im most confused with

Answer 21

Take the first one.
It looks like a parallelogram, but nothing says it is. In fact, it says it is not drawn to scale. It is not a proper way to write a mathematics question. But we have to live with what we have, and \(assume\) that it is a parallelogram.

Now a parallelogram has opposite side equal, so the bottom side (base) is also 32 inches, with a height (altitude) of 33 inches.
The area of a parallelogram is given by
A=base*height.
Can you find the area?

Answer 22

1056

Answer 23

Great! Do you want to try the third one about a trapezoid?
Remember, again, nothing says it is a trapezoid, so we need to \(assume\) it is a trapezoid, which means that we assume that the top and bottom sides are parallel.

Can you find x?

Answer 24

3? @mathmate

Answer 25

No it's not 3. We are given the angle 45 degrees.
Do you know what is x in the following diagram?

Answer 26

225 ? @mathmate

Answer 27

Not really.
When a right triangle is 45-45-90, the two legs (that make the 90 degrees angle) are equal. So the value of x is 5.

Now can you tell me the lengths of the top and bottom sides?

Answer 28

im not sure im sorry

Answer 29

@mathmate

Answer 30

So you have a height of 5, and the parallel sides 10 and 10 cm, right?

Answer 31

yes

Answer 32

so I have to multiply all of them @mathmate

Answer 33

No, you would use, for a trapezoid, the following formula:
Area = (1/2)(top side+bottom side)*(height)
and that will give the area.

Answer 34

so (1/2)(10+10)(5)

Answer 35

wait, the bottom side is not 10, it's more than 10! :(