Question

Oblicz pole trapezów:

a) P=0,5*(m+d) * h
m= 8,5cm
d= 4,5cm
h=6

b) P= ½ * (p+u) * d
p=5⅘cm
u=8⅕cm
d= 4½cm

c)P= ½ * (p+d) * h
p=5⅘cm
h=3½cm
d=2⅕cm

Answer 1

A)P=0,5 * (8,5cm+4,5cm) * 6cm = 0,5 * 13cm * 6cm = 39cm²
b)½ * (5⅘cm+8⅕cm) * 4½cm = ½ * 14 * 4½cm = 31½cm²
c)P= ½ * (5⅘cm+3½cm) * 2⅕cm = ½ * 5⁸/₁₀ * 2⅕ = 6,¹⁹/₅₀cm²

Answer 2

A)P=0,5 x (8,5cm+4,5cm) x 6cm = 0,5 x 13cm x 6cm = 39cm²
b)½ x (5⅘cm+8⅕cm) x 4½cm = ½ x 14 x 4½cm = 31½cm²
c)P= ½ x (5⅘cm+3½cm) x 2⅕cm = ½ x 5⁸/₁₀ x 2⅕ = 6,¹⁹/₅₀cm²

Answer 3

A)P=0,5 * (8,5cm+4,5cm) * 6cm = 0,5 * 13cm * 6cm = 39cm²
b)½ * (5⅘cm+8⅕cm) * 4½cm = ½ * 14 * 4½cm = 31½cm²
c)P= ½ * (5⅘cm+3½cm) * 2⅕cm = ½ * 5⁸/₁₀ * 2⅕ = 6,¹⁹/₅₀cm²