(每平方吋計)**

首先我想問點解上面ge答案無神神會MENTION到呎?我ge答案就係咁:

其實好容易; "平方吋" 即係 "吋x吋"
你只要計下 22吋 x 28吋 等如幾多平方吋，再乘$ 0.30就得架喇~~

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22吋 x 28吋 = 616平方吋

每平方吋要$ 0.30

所以:

616平方吋 * $ 0.30 = $184.8

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Therefore you need to pay $184.8 to buy it...

Hope you will understand...and my answer can help you^^ Good Luck~

一尺=10吋,
22吋係2.2尺,28吋係2.8尺
是張22*28(吋)=616(吋)
616*0.3=184.8(元)
.....................................好像係咁計!!!!!