Ada yang tau ngga no.4 jawabannya apa?THANKS kalau jawab!

Lp = 2(pl + pt + lt)
Lp = 2 (( 14 × 7) + (14 × 22,5) + (7 × 22,5))
Lp = 2(98 + 315 + 157,5)
Lp = 2(570,5)
Lp = 1.141 cm^2 (D)

luas permukaan balok
= 2x((pxl) + (pxt) + (lxt))
= 2x((14x7) + (14x22,5) + (7x22,5))
= 2x ( 98 + 315 + 157,5 )
= 2x570,5
= 1141 cm persegi