s=√r²+t²
=√4²+3²
=√16+9
=25
Lp=(π×r)×(s+r)
=3,14×4×(25+4)
=12,56×29
=364,24cm²
v=1/3×π×r²×t
=(1/3×3,14×4×4)×3
=12,56×4
=50,24cm³
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Verified answer
s=√r²+t²
=√4²+3²
=√16+9
=25
Lp=(π×r)×(s+r)
=3,14×4×(25+4)
=12,56×29
=364,24cm²
v=1/3×π×r²×t
=(1/3×3,14×4×4)×3
=12,56×4
=50,24cm³