Question

Tolong bantuannya

yg c itu no 1
yang tenda no 2

Answer 1

1.) Lp kubus = 6La
= 6 x 6 x 6 = 216cm²
Lp trapesium = 2La + 3 x 6 x 6
=2 (a x t/2) + 108
=2 ( 6 x 6/2) + 108
=2 x 18 + 108
=36 + 108
=144

=216 + 144 - 6x6
=216+144-36
=324cm²

2.) 2 (1.5x2/2)
= 2 x 1.5 = 3m²
√1.5² + 2² = √2.25 + 4 = √6.25 = 2.5
2 x 4 x 2.5 = 20
Luas kain= 3 + 20 = 23m²