" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1320=2×22/7×r×15
1320×7=2×22×r×15
9240=660r
r=9240/660
r=14 cm
Lp=2×π×r(t+r)
=2×22/7×14(15+14)
=88×29
=2552cm²
smgaa memmbantu
1320 = 2.pi.r.15
1320/15/2 = pi.r
44.7/22 = r
r = 14 cm
Lp = pi.r (r+t)
=22/7.14(14+15)
=44.29
=1276 cm2