Một hình chữ nhật có chu vi là 120cm.biet chiều dài hơn chiều rộng là 16cm. tính diện tích hình chữ nhật

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đáp án

do chu vi hình chữ nhật là 120 cm

nên tổng của chiều dài và rộng là 120:2=60(cm)

mà chiều dài hơn chiều rộng 16 cm

nên chiều dài là (60+16):2=38(cm)

nên chiều rộng là 60-38=22(cm)

nên diện tích là 22*38=836(cm)

Đáp án:

Giải thích các bước giải: Nửa chu vi là:120:2=60cm

Chiều dài là:(60+16):2=38cm

chiều rộng là:60-38=22cm

diện tích là:38.22=836 m2

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