72÷1.56²等于多少?
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解:72÷1.56²等于( 5000/169 ),【即约等于29.59】
∵已知需求出72÷1.56²等于多少
A ÷ B = A / B = C
∴72 ÷ 1.56²
= 72 ÷ (1.56 × 1.56)
= 72 ÷ [(1×100+56)/100 × (1×100+56)/100]
= 72 ÷ (156/100 × 156/100)
= 72 ÷ (39/25 × 39/25)
= 72 ÷ 1521/625
= 72 × 625/1521
= 5000/169
= 29.58579882
≈ 29.59
答:72÷1.56²等于5000/169,【即约等于29.59】
∵已知需求出72÷1.56²等于多少
A ÷ B = A / B = C
∴72 ÷ 1.56²
= 72 ÷ (1.56 × 1.56)
= 72 ÷ [(1×100+56)/100 × (1×100+56)/100]
= 72 ÷ (156/100 × 156/100)
= 72 ÷ (39/25 × 39/25)
= 72 ÷ 1521/625
= 72 × 625/1521
= 5000/169
= 29.58579882
≈ 29.59
答:72÷1.56²等于5000/169,【即约等于29.59】
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