Question

equilateral triangle? (c) a regular hexagon? 12. Two sides of a triangle are 12 cm and 14 cm. The perimeter of the triang] 36 cm. What is its third side? 13. Find the cost of fencing a square park of side 250 m at the rate of 5 20 per met​

Answer 1

Answer:

12) perimeter of the triangle=36cm

12+14+x=36

x=36-26=10cm

13) perimeter of square =4a

=4×250

=1000 m

520 rupees is the cost for fencing 1 metre.

therefore cost of fencing for 1000 m

=1000×520

=5,20,000 rupees