Question

A flashlight is projecting a triangle onto a wall

Answer 1

Answer:

24

Step-by-step explanation:

The the triangles are similar, the lengths of corresponding sides are in proportion.

15/20 = 18/n

3/4 = 18/n

1/4 = 6/n

n = 4 × 6

n = 24

Answer 2

Answer:

n = 24

Step-by-step explanation:

In similar triangles, corresponding sides are in same ratio.

$\dfrac{n}{18}=\dfrac{20}{15}\\\\\\n=\dfrac{20}{15}*18\\\\\\n = 4*6\\\\n = 24$