Question

Geometry...

Answer 1

Got any clue?

Answer 2

Nice, no help at all....

Answer 3

Ratio is 4:3, so

Width: Height

4:3

4x:3x

where x is some number, so width = 4x, height = 3x

if the width is 4x and the height is 3x, and the diagonal is 42 in, then

a^2 + b^2 = c^2

(4x)^2 + (3x)^2 = 42^2

16x^2 + 9x^2 = 1764

25x^2 = 1764

I'll let you finish

Answer 4

Then you find the square root of 1764 and 15.
\[\sqrt{25x}=\sqrt{1764}\]
Is that right?

Answer 5

first divide both sides by 25

then you take the square root of both sides

Answer 6

Oh ok thanks! ... yeah I learned this, but the ratio they usually give is 4:1, not 4 to some other number.
x^2 = 70.56
x=8.4

Answer 7

now you use this value of x to find the width and height

remember that

width = 4x, height = 3x

Answer 8

So I plug in the number 8.4 into the given places

Answer 9

exactly

Answer 10

4(8.4), 3(8.4)
33.6, 25.2

Answer 11

so your answer is choice ___

Answer 12

D. 33.6 and 25.2

Answer 13

yep, you nailed it

Answer 14

order is backwards, but it still works

Answer 15

Yeah. haha thanks... I understand finding the angles, and classifying angles, but finding the sides always confuses me...

Answer 16

just keep at it and you'll master it eventually

Answer 17

Thanks again....

Answer 18

yw