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?
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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
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