Question

15. Find the perimeter of:
(i) an equilateral triangle of side 9.8cm
(ii) an isosceles triangle with each equal side = 13 cm and the third side = 10 cm.
(iii) a regular pentagon of side 8.2 cm.
(iv) a regular hexagon of side 6.5 cm.​

Answer 1

Step-by-step explanation:

(i) 9.8 cm x 3 = 29.4 cm                                        Triangle has 3 sides

(ii) 13 cm + 13 cm + 10 cm               Isosceles Triangle = 2 equal sides

(iii) 8.2 cm x 5 = 41 cm                                         Pentagon has 5 sides

(iv) 6.5 cm x 6 = 39 cm                                         Hexagon has 6 sides