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Verified answer
Rumus segitiga = 1/2 * a * tKarena alasnya diturunkan 25%, maka 100% - 25% = 75%
Karena tingginya dinaikkan 50%, maka 100% + 50% = 150%
L1 : L2
= 1/2 * a * t : 1/2 * 75%a * 150%t
= 1/2 : 1/2 * 75% * 150%
= 1 : 75% * 150%
= 1 : 75/100 * 150/100
= 1 : (3/4)(3/2)
= 1 : (9/8)
9/8 = 1125/1000
= 112,5%