Question

Triangles abc and def are similar. If angle c = angle f, ab= 4.2 cm, de = 2.1 cm, bc = 6.4 cm. Find ef

Answer 1

Answer:

3.2 cm

Step-by-step explanation:

ab = 4.2

de = 2.1

the ratio between the two are 0.2:0.1

so , bc = 6.4 cm

ef = (take proportion)

let ef = x

6.4 : x : : 0.2 : 0.1

product of means = product of extremes

0.64 = 0.2x

x = 0.64 / 0.2

x = 3.2 cm