Question

in a school students thought of planting trees in and around the school to reduce air pollution. it was decided the no of trees that each section of each class will plant will be the same as the class in which they r studying .eg a section of class 1 will plant 1 tree,a section of class 2 will plant 2 trees and so on till class 12.there r 3 sections of each class.how many trees will be planted by the students?

Answer 1

Answer:

ok this is the best answer given below

Answer 2

234 trees will be planted by the students.

Step-by-step explanation:

Given that,

Number of trees planted = class * 3

Class 1 = 3

Class 2 = 6

Class 3  = 9

This shows that

a = 3, d = 3 and n = 12

To determine the number of trees planted, we can use;

$S_{n}$ = $\frac{n}{2} [2a + (n -1) d}$}

$S_{12}$ = 12/2{2*3 + (12 - 1)3}

= 234trees

Learn more: find the number of trees grown

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