Jawapan

2015-10-31T12:34:25+08:00
 Luas kawasan berlorek =512/17/21
2015-10-31T14:25:57+08:00
TU = TV = 14 cm
TV : VW = 2 : 1

TV/VW = 2/1
TV = 2VW
14 = 2VW
VW = 14 ÷ 2
VW = 7 cm

luas trapezium
= 1/2 x panjang sejajar x tinggi
= 1/2 x (18+14) x VW
= 1/2 x 32 x 7
= 112 cm²

luas sektor bulatan
= 120/360 x πj²
= 120/360 x 22/7 x 8²
= 67.0476
≈ 67.05 cm²

luas kawasan berlorek
= luas trapezium - luas sektor bulatan
= 112 - 67.05
= 44.95 cm²