Question

Tolong bantu ya pake caranya

Answer 1

1 m = 100 Cm

Alas Trapesium = 1 m = 100 Cm
Atas Trapesium = 40 Cm
Tinggi Trapesium = 80 Cm
Tinggi Prisma = 3 m = 300 Cm

Panjang Sisi Miring Trapesium = √ ( Alas - Tutup )² + T.trapesium²
= √ ( 100 - 40 )² + 80²
= √ 60² + 6400
= √ 3600 + 6400
= √ 10.000
= 100 Cm

Luas Permukaan = ( 2 x Luas Alas ) + ( Keliling Alas x Tinggi )
= ( 2 x ½ x ( Alas + Atap ) x T.trapesium ) + ( ( Alas + Atap + T.trapesium + Sisi Miring ) x Tinggi Prisma )
= ( 1 x ( 100 + 40 ) x 80 ) + ( ( 100 + 40 + 80 + 100 ) x 300 )
= ( 140 x 80 ) + ( 320 x 300 )
= 11.200 + 96.000
= 107.200 B