the first term of an ap is 1 and its 20th term is 20 the sum of its 20 terms is
Answers
Edge of the cube
The volume of the cube corresponds to the space held within it. The cube has all faces in square structure, all the faces have equal dimensions. The edges opposite to each other are parallel.
We know that, the volume of cube is equal to the product of three times of the edges of the cube.
In mathematical term the volume of cube will be,
\implies Volume_{(cube)} = a^3⟹Volume
(cube)
=a
3
Here a is the edge of cube. And here in this question we have, Volume = 1331cm³. So by using the volume of cube formula we can get our edge value.
Let us assume that, the edges of the cube be a \; cm.acm.
By using the required
Answer:
We notice that the A.P is same to term.
then,
sum of 20 term = sum of 1 to 20
=> 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20
=> 210
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