tolng bntu ya ka yng pintar nomer 1 aja ka yg pinter mtk

r=5 cm, t=12 cm

a. s=√(r²+t²)
s=√(5²+12²)
s=√169
s=13 cm

b. Ls=πrs
Ls=3,14 x 5 x 13
Ls=204,1 cm²

c Lp=πr(r+s)
=3,14 x 5(5+13)
=3,14 x 5(18)
=282,6 cm²