Hitunglah luas permukaan bola yang berjari-jari :
a. 3,5 cm
b. 2,1 cm
a. 3,5 cm
b. 2,1 cm
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
a. Lp = 4 × 22/7 × 3,5 × 3,5
4 × 11 × 3,5 = 44 × 3,5 = 154 cm²
b. Lp = 4 × 3,14 × 2,1 × 2,1
12,56 × 4,41 = 55,39 cm²
itu yg b nggk salah tulis soal kan? kalau r nya 21 hasilnya jdi bulat .. begini:
4 × 22/7 × 21 × 21 = 4 × 66 × 21 =5.544 cm²