Question

Given that a= 0.9 cm and b = 2 cm, work out the perimeter of the triangle.
Give your answer rounded to 1 DP.

Answer 1

Answer:

1.1 cm

Step-by-step explanation:

$a^2 + b^2 = c^2$

$0.9^{2} + (2)^{2} = c^2$

$0.81 + 4= c^2$

$\sqrt{4.81} =c$

2.2= c

2.2 + 0.9 + (-2)

= 1.1