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40 = 20 x t <------- 20 dan 2 di coret / di bagi
2
40 = 10 x t
40 = 10t
40/10=t
4 = t
maka tingginya = 4
2
40 = 20 × t
2
40 = 10 × t
40 : 10 = t
4 cm = t
Semoga jawabannya benar