Answer:
40 cm² = <em>B</em>
178,127514 ≈ LA
218,127514 ≈ <em>SA</em>
Step-by-step explanation:
First and foremost, since we were not given a height, to find the height, take one-third of the <em>area </em><em>base</em><em> </em>[<em>area base</em> in this case is <em>ws</em><em>,</em><em> </em>since it is a rectangular base]:
This is your <em>height</em><em>.</em>
Now, to find the lateral area, we use this formula:

Plugging these numbers into this formula will give you an approximate value of 178,127514.
Then you add the lateral area to the base area to get your surface area:

I am joyous to assist you anytime.
Answer:

Step-by-step explanation:
<em>Answer,</em>
C. 1650
<em>Explanation,</em>
<em>495/6 = 82.5</em>
<em>82.5 x 20 = </em><em>1650</em>
<u><em>Hope this helps :-)</em></u>
Area = Length x Width
The Length is 2 inches
The Width is 5/6 inches
2 * (5/6) = 10/6
simplify and you get....
5/3
Area of square =6*6= 36 cm^2
Area of trapezoid =1/2( base1+base2)*height
base 1=7
base2=21-6=15
height=6
Area of trapezoid =1/2( 7+15)*6= 66
whole area = area of square + area of trapezoid= 36+66=102
Answer 102