Question

3.
The length & breadth of a ground are 25 m & 20 m respectively. Find the
cost of grassing the ground at a rate of Rs. 5 per m².
Two sides of a triangle are 24 cm & 28 cm. The perimeter of the triangle is
72 cm. What is the measurement of third side?
4.​

Answer 1

Answer :-

3) Length = 25 m

Breadth = 20 m

Therefore ,

are of rectangle = 25 × 20 = 500 m²

therefore , If per m² costs Rs.5

therefore , 5 ×500 = Rs. 2500

Therefore , it would cost Rs. 2500/-

4) Sides of traingle = 24 cm , 28 cm

Third side =? = x

perimeter = 72 cm

therefore , perimeter of traingle = sum of all sides

72 = 24 + 28 + x

72 = 52 + x

72-52 = x

x = 20 cm

Therfore, third side measures 20 cm

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