1. The perimeter and area of ∆FBC is 17.7 units and 14 units² respectively
2. The perimeter and area of ∆AEF is 15.6 units and 10units² respectively
To calculate the perimeter of the triangle we need to find the slant sides of the triangles.
BF = √ 4² + 4²
BF = √32
= 5.7units
BC = √ 4² + 3²
BC = √25
BC = 5
1. Perimeter of FBC = 7 + 5 + 5.7
= 17.7 units
area of FBC = 1/2 × 4 × 7
= 14 units²
2. AE = FE
AE = √5² + 3²
= √34
= 5.8
FE = 5.8
Perimeter of AEF = 4 + 5.8 + 5.8
= 15.6 units
area of AEF = 1/2 × 4 × 5
= 10units²