Question

Need help with two area questions ! (Pictures Below)

Answer 1

use trigonometry

Answer 2

No trigonometry needed for the first one

Answer 3

have you covered the 30-60-90 and 45-45-90 rules yet?

Answer 4

Yes, but I dont know how to do them

Answer 5

Careful on the first one...cause the numbers don't match the scale of the drawing at all!

Answer 6

the 1st one pretty much is just the 45-45-90 rule
the 2nd one uses the 30-60-90 rule -> http://grockit.com/blog/wp-content/uploads/2011/04/111.jpg <--- notice the ratios for both rules

Answer 7

Actually on the first one, you just need to recognize that the triangle is isosceles

Answer 8

so once you know one side for the triangle, you can get the "opposite" or vertical line length

recall that a triangle's area is "base times height" so the base is 8

Answer 9

so the shape is a rectangle and a triangle, get their independent area and sum them up to get the area of the shape

Answer 10

Okay so i did the 45-45-90 thing, and i got 11.31 for the hypotenuse

Answer 11

do i even have to get the hypotenuse to solve that problem?

Answer 12

one the 2nd picture is the 30-60-90 rule

you're already given one side, 8
notice is a rhombus, thus 4 equal triangles

so you get the "vertical line" or height for that triangle, get its area
and do that 4 times since there are 4 triangles

to get the area of the shape

Answer 13

Okay

Answer 14

Driana_18 you do not need the hypotenuse, or slanted side for the triangle's area
you need the "vertical line"