Answer:
40.5 cm²
Step-by-step explanation:
Given the ratio of sides of 2 figures = a : b
then the ratio of areas = a² : b²
Here the ratio of Δ A : Δ B = 2 : 1, thus
ratio of areas = 2² : 1² = 4 : 1
That is the area of Δ A is 4 times area of Δ B, so
area of Δ B = 162 ÷ 4 = 40.5 cm²
