Question

Find the cost of cementing a tunnel of dimensions 50mx40mis provided with a semi circular entrance at the rate 40 rupees per meter square . If the height of the tunnel is 10 m​

Answer 1

Answer:

Let the length of the third side be x cm.

The length of the other two sides is 12 cm and 14 cm.

Now, the Perimeter of triangle = 36 cm

12+14+x=3612+14+x=36

26+x=3626+x=36

x=36-26=10x=36−26=10

Thus, the length of third side is 10 cm.