Question

a)The side of an equilateral triangle is 4.2 cm. Find its perimeter. b) Find the average of 5.4, 3.5 and 6.7.

Answer 1

a) Perimeter = sum of all sides.

Thus, Perimeter = (4.2)(3) ......(since triangle has 3 sides)

=> perimeter = 12.6 cm

b) Here, I am considering average as mean.

So, mean = sum of all numbers/no. of numbers

= (5.4+3.5+6.7)/3

= 15.6/3 = 6.2