Question

Find the area of the blades of a magnetic compass shown in Figure 17.27​

Answer 1

Answer:

160sq.units

Step-by-step explanation:

32bh area of two scalane triangles

(b/2)^2+h^2=s^2

h^2=s^2-(b/2)^2

h^2=5^2-(1/2)^2

h=root99/2

substitute in 32bh

=32×1×root99/2

=16×root 99

=159.20sq.units

approximately =160 sq.unit