ọdịnaya
Rhombuses bụ ihe oyiyi geometric; parallelogram na 4 nha n'akụkụ.
Usoro mpaghara
Ogologo akụkụ na ịdị elu
Mpaghara nke rhombus (S) hà nhata ngwaahịa nke ogologo akụkụ ya na ịdị elu dọtara ya:
S = a ⋅ h
Site n'ogologo na akụkụ
Mpaghara nke rhombus hà nhata ngwaahịa nke square nke ogologo n'akụkụ ya na sine nke akụkụ n'etiti akụkụ:
S = a 2 ⋅ enweghị α
Site na ogologo nke diagonals
Mpaghara nke rhombus bụ ọkara ngwaahịa nke diagonals ya.
S= 1/2 ⋅ d1 ⋅ d2
Ihe atụ nke ọrụ
Ọrụ 1
Chọta mpaghara nke rhombus ma ọ bụrụ na ogologo akụkụ ya dị 10 cm na ịdị elu a na-adọta ya bụ 8 cm.
Mkpebi:
Anyị na-eji usoro mbụ a tụlere n'elu: S u10d 8 cm ⋅ 80 cm uXNUMXd XNUMX cm2.
Ọrụ 2
Chọta ebe rhombus nke akụkụ ya dị 6 cm na akụkụ ya dị 30 °.
Mkpebi:
Anyị na-etinye usoro nke abụọ, nke na-eji ọnụọgụ mara site na ọnọdụ ntọala: S = (6 cm)2 ⋅ mmehie 30° = 36 cm2 ⋅ 1/2 = 18 cm2.
Ọrụ 3
Chọta mpaghara nke rhombus ma ọ bụrụ na diagonal ya dị 4 na 8 cm, n'otu n'otu.
Mkpebi:
Ka anyị jiri usoro nke atọ, nke na-eji ogologo nke diagonals: S = 1/2 ⋅ 4 cm ⋅ 8 cm = 16 cm2.