Answer:
2412 mm³
Step-by-step explanation:
In the figure attached, the composite figure is shown.
Dimension of top rectangular prism:
Volume of top rectangular prism: length*width*height = 13*12*12 = 1872 mm³
Dimension of bottom rectangular prism:
Volume of bottom rectangular prism: length*width*height = 15*12*3 = 540 mm³
Volume of the composite figure: 1872 + 540 = 2412 mm³
Take one angle as 2x and the other as x because then their ratio would be 2:1. And when you add them you get 90. So you want to find x,
2x+x=90
3x=90
x=30
One angle is 2*30 or 60 degrees, and the other is 1*30 or 30 degrees.
And it makes sense. 60:30 is a 2:1 ratio if you divide both sides by 30 and they both add to 90.
Hope this helps.
Answer:
A. 12
Step-by-step explanation:
If A and D are congruent, then which becomes after adding which then solves down to .
Answer:
20cm square
Step-by-step explanation: