Answer:
P = 8,8 cm;
A = 3,6 cm^2
Explanation:
Given:
An isosceles triangle (lateral sides are equal)
l (lateral side's length) = 3,2 cm
b (base length) = 2,4 cm
h (height) = 3 cm
Find: P (perimeter) and A (area) - ?
The perimeter is the sum of all side lengths
P = 2l + b
P = 2 × 3,2 + 2,4 = 8,8 cm
The area (triangle's) is the half product of base length and height
A = 0,5 × b × h
A = 0,5 × 2,4 × 3 = 3,6 cm^2