(Lanjutkan ....) hitunglah luas permukaan dari masing-masing prisma berikut. Yg nomor c dan d. Pake cara ya.
5dregensleyer
Jawaban soal C a = 1/2 x 18 = 9 s = √12² + 9² = √ 144 + 81 = √ 225 = 15 ka = 15 + 15 + 18 = 48 LP = 2La + ka x t = ( 2 x a x t) + ( 48 x 35) = ( 2 x 9 x 12) + 1680 = 216 + 1680 = 432 cm²
a = 1/2 x 18
= 9
s = √12² + 9²
= √ 144 + 81
= √ 225
= 15
ka = 15 + 15 + 18
= 48
LP = 2La + ka x t
= ( 2 x a x t) + ( 48 x 35)
= ( 2 x 9 x 12) + 1680
= 216 + 1680
= 432 cm²
jawaban soal D
Lp = 2 (pxl + pxt + lxt)
= 2 ( 8x6 + 8x15 + 6x15)
= 2 ( 48 + 120 + 90)
= 2 ( 258)
= 516 cm²