Question

11. 27 m =
cm
12. 9
m
ООО
) cm
13. 17 m =
cm
14. 9 m
cm​

Answer 1

For an equilateral triangle with side ‘a’, area

∴ Each side of the triangle = a cm

∴ a + a + a = 180 cm

⇒ 3a = 180 cm

Now, s = Semi–perimeter

∴ Area of a triangle

∴ Area of the given triangle

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Answer 2

Answer:

11) 27m = 2700cm

12) 9m= 900cm

13)17m=1700cm

14)9m=900cm