Question

Q2 Al Solve the following Activity ( 1 mark each) [2 marks]
1. First term and common difference of an A.P are 6 and 3 respectively find
S37?
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Answer 1

Step-by-step explanation:

here is my answer

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Answer 2

$\text{First term and common difference} \\ \text{ of an A.P are 6 and 3 respectively} \\ \rm{ Find \: \: S_{37} \: \: ?</p><p>}$

Here,

• a = 6
• d = 3

We know,

$\rm{S_n = \frac{n}{2} \{2a + (n - 1)d \}}$

Applying the above formula, we get,

$\tt{}S_{37} = \frac{37}{2} \{ 2(6) + (n - 1)3\} \\ \\ \to \tt{18.5 \{12 + (37 - 1)3 \}} \\ \to \tt 18.5\{ 12 + 36(3)\} \\ \to \tt18.5 \{12 + 108 \} \\ \to \tt18.5(120) \\ \\ \huge\tt{}S_{37} \to \tt \red{2220}$