Find the length of the third side of a triangle having a perimeter of 55 cm and having two sides of length 20 cm Class 6
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Find the length of the third side of a triangle having a perimeter of 55 cm and having two sides of length 20 cm Class 6
Question 1.
Find the length of the third side of a triangle having a perimeter of 55 cm and having two sides of length 20 cm and 14 cm, respectively. Class 6
Solution:
Length of the third side of the triangle = Perimeter-Sum of the lengths of the two sides
= 55 cm - (20 + 14) cm = (55 - 34) cm = 21 cm.
Question 2.
What would be the cost of fencing a rectangular park whose length is 150 m and breadth is 120 m, if the fence costs ? 40 per metre? Class 6
Solution:
Perimeter of the rectangular park
= 2(Length + Breadth)
= 2(150 + 120) m - 540 m.
So, cost of fencing at ₹ 40 per metre
= ₹ 540 × 40 = ₹ 21600.