The answer is A, Angles in an equilateral triangle are congruent.
1950.9 is the surface area.
4580.4 is the volume.
To make ∠ADC is a right angle, value of x will be 7.
From given figure, it is observed that Angle ADC is combination of two angles ADB and BDC.
∠ADC=∠ADB+∠BDC
Since, ∠ADC is right angle.
So, ∠ADC=90 degree
90=∠ADB+∠BDC
![6x-4+4x+24=90\\ 10x+20=90\\ 10x=70\\ x=7](https://tex.z-dn.net/?f=6x-4%2B4x%2B24%3D90%5C%5C%20%20%20%20%2010x%2B20%3D90%5C%5C%20%20%20%20%20%2010x%3D70%5C%5C%20%20%20%20%20%20%20x%3D7)
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20,000 divided by 10 is 2,000.
Answer:
678.24 ft³
Step-by-step explanation:
The larger cone has linear dimensions (radius and height) that are 3 times those of the smaller cone. (ratio = 6 ft/(2 ft) = 3)
The ratio of volumes is the cube of the ratio of linear dimensions, so the volume of the larger cone is ...
... V = (25.12 ft³)·(3³) = (25.12 × 27) ft³ = 678.24 ft³