Given:
Trapezoid with bases 10 and 20, and height of the trapezoid is 6.
To find:
The area of the trapezoid.
Solution:
We know that the area of a trapezoid is:
Where, h is the height of the trapezoid and 
are bases of the trapezoid.
Putting 
in the above formula, we get
The area of the trapezoid is 90 sq units. Therefore, the correct option is A.
For your question the answer is C.
Hope this helps:)
Actually Welcome to the Concept of the Surface Areas and Volumes.
Since, Volume of cone = 1/3 π r^2 h,
here, r = 10 Inches and h= 12 inches, also π =3.14
so, VOC = 1/3 π (10)^2 × (20)
VOC = 1/3(3.14)(100)(20)= 2093.33 inch^3
=> so the volume of the cone is 2093.33 cubic inches.
HEY THERE.
THE CORRECT ANSWER IS 36/63 = 4/7
Hope this helps you
