Question

Q1 The area of triangle is 150 sq cm and its sides are in the ratio of 3:4:5. What is its
perimeter ?
Q2 If perimeter of an Equilateral triangle is 60 cm hen find the area ?
Q3 The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?
Q4 Length of one of the equal sides of an isosceles triangle is 4 cm. If its base is 2 cm then what is its area?

Answer 1

Step-by-step explanation:

To solve Q3, add the three digits of the ratio,

3 + 4 + 5 = 12

So, the first and least side is

= 3/12 x 36

= 9cm

The second side is

= 4/12 x 36

= 12cm

The third, last and longest side is'

= 5/12 x 36

= 15cm

The area of a triangle = 1/2 x bh