In the figure, if m∠abd = 120º, then m∠adc = º.

will mark brainliest!

132.07

Step-by-step explanation:

okay first, use the sin rule (\frac{SinA}{a} = \frac{SinB}{b}

a

SinA

=

b

SinB

so \frac{Sin120}{35} * 30 = SinB

35

Sin120

∗30=SinB

sin^-1 this and you get 47.928this is angle ADB

and as it is on a straight line, 180 - this angle gets ADC

180 - 47.928 = 132.07

It looks like you're doing good with breaking-down the composite into digestible pieces. So, don't stress too much!

Keep in mind that the area for a 3D shape is Bh, where "B" is the area of a face & "h" is the height.

#5
Shape A is 3X4X9.
First, calculate the area of a face:

9X4= 36

Multiply by height:

36X3= 108

The process is the same with shape B.
3X4X8
Calculate area of face:

8X4= 32

Multiply by height:

32X3= 96

Now you add both areas:

108+96= 204 cubic feet

I think you're doing pretty good, just don't over think things too much. Try #8 with the similar process seen here. Just comment if you get stuck.

Hope this helps!