Soal SMP · Soal cerita · Kesulitan 3/5

A rectangle has a length of 12 cm and a width of 8 cm. If both the length and width are increased by 25%, what is the new area?

A.120 cm²
B.150 cm²
C.180 cm²
D.200 cm²

Kunci jawaban & pembahasan

Jawaban: 120 cm²

New length = 12*1.25=15 cm; new width = 8*1.25=10 cm; area = 150 cm².

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