trapezoid area and perimeter 1:
problem
A trapezoid: a = 5 cm, h = b = 21 cm, c = 33 cm, d = 35 cm
a) calculate the the perimeter/circumference of the trapezoid
b) calculate the area of the trapezoid
answer:
a) answer perimeter
P = a + b + c + d
P = 5 + 21 + 33 + 35
P = 94 cm
A: The perimeter of the trapezoid is 94 cm.
b) answer area
A = (a + c) * h
2
A = (5 + 33) * 21
2
A = 399 cm²
A: The area of the trapezoid is 399 square centimeters.