(8 + 4√5) cm
Penjelasan dengan langkah-langkah:
CB² = BD x AB
= 4 x 20
= 80
CB = √80 = √(16x5) = 4√5
CD² = CB² - BD²
= 80 - 4²
= 80 - 16
= 64
CD = √64 = 8
CB + CD = 4√5 + 8
= (8 + 4√5) cm
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(8 + 4√5) cm
Penjelasan dengan langkah-langkah:
CB² = BD x AB
= 4 x 20
= 80
CB = √80 = √(16x5) = 4√5
CD² = CB² - BD²
= 80 - 4²
= 80 - 16
= 64
CD = √64 = 8
CB + CD = 4√5 + 8
= (8 + 4√5) cm