the first term of an A. P. is 5 and the common difference is 4. complete the following activity and find the sum of the first 12 terms of the A. P.
Answers
Answered by
2
Answer:324
Step-by-step explanation:
Formula of Sum of a.p is :-
Sn=n/2[2a+(n-1)d]
S12=12/2(2×5+(12-1)4]
We have just substituted the given values in the formula
S12=6 [10+11×4]
S12=6 (10+44)
S12=6 (54)
S12=324
Hope it has helped in clearing your doubt !!
Answered by
1
Answer:
Step-by-step explanation:
Step-by-step explanation:
Formula of Sum of a.p is :-
Sn=n/2[2a+(n-1)d]
S12=12/2(2×5+(12-1)4]
We have just substituted the given values in the formula
S12=6 [10+11×4]
S12=6 (10+44)
S12=6 (54)
S12=324
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