Jawab:
r = 10 : 2
= 5 cm
L. persegi panjang = P × L
= 12 × 10
= 120 cm²
L. 1/2 lingkaran = 1/2 × π × r × r
= 1/2 × 3,14 × 5 × 5
= 1,57 × 5 × 5
= 7,85 × 5
= 39,25 cm²
L. segitiga = a × t : 2
= 12 × 5 : 2
= 60 : 2
= 30 cm²
L. gabungan = ( 120 - 39,25) + 30
= 80,75 + 30
= 110,75 cm²
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawab:
r = 10 : 2
= 5 cm
L. persegi panjang = P × L
= 12 × 10
= 120 cm²
L. 1/2 lingkaran = 1/2 × π × r × r
= 1/2 × 3,14 × 5 × 5
= 1,57 × 5 × 5
= 7,85 × 5
= 39,25 cm²
L. segitiga = a × t : 2
= 12 × 5 : 2
= 60 : 2
= 30 cm²
L. gabungan = ( 120 - 39,25) + 30
= 80,75 + 30
= 110,75 cm²