Tolong jawab Yang Nomor 3 dan 4 .Pake Caranya!No Asal!

3.)
s₁ = 5 cm
s₂ = 10 cm
t = 5 cm

L.Trapesium = (s₁ + s₂)/2 • t
=>(5 + 10)/2 • 5
=>15/2 • 5
=>75/2

Ada 2 Trapesium
=>2 •75/2 = 75 cm²

4.)
Trapesium
s₁ = 40 cm
s₂ = 70 cm
t = 32 cm

L = (s₁ + s₂)/2 • t
=>(40 + 70)/2 • 32
=>110 • 16
=> 1760 cm²

Segitiga
a = 70 cm
t = 40 cm

L = at/2
=>70 • 40/2
=>70 • 20
=>1400 cm²

L.tot = 1760 + 1400 = 3160 cm²

3.) s = 10 cm

* L trap = ½ (a+b).t
= ½ (10+5) 5
= ½ 15.5
= ½. 75
= 37,5 cm²
berarti Luas 2 trapesium = 2. 37,5 = 75 cm²

4 ) Lb = L trap + L ∆
= ½(a+b) t + ½. a.t
= ½(70+40) 32 + ½. 40. 70
= 16 (110) + 20. 70
= 1760 + 1400
= 3160 cm²

smg mmbntu ya