Question

[౨ৎ𝔟ú𝔫𝔠𝔲𝔱𝔢´꒳`]

Một hình chữ nhật có chiều dài là \(\frac34\) m, chiều rộng kém chiều dài \(\frac{1}{5}\) m. Vậy diện tích hình chữ nhật đó là:

A. \(\frac{30}{80}m^2\) B. \(\frac{33^{}}{88}m^2\) C. \(\frac{33}{80}m^2\) D. \(\frac{33}{20}m^2\)

Answer 1

[Nguyễn Lê Phước Thịnh]

Chiều rộng là: \(\frac34-\frac15=\frac{15-4}{20}=\frac{11}{20}\) (m)

Diện tích hình chữ nhật là:

\(\frac{11}{20}\times\frac34=\frac{11\times3}{20\times4}=\frac{33}{80}\left(m^2\right)\)

=>Chọn C

Answer 2

[tên ẩn]

Đáp án chính xác là C.

Answer 3

[Huỳnh Gia Bảo]

\(\boxed{\star19/08/2004}\)

Chiều rộng hình chữ nhật là:

\(\dfrac34-\dfrac15=\dfrac{11}{20}\) (m)

Diện tích hình chữ nhật là:

\(\dfrac34\cdot\dfrac{11}{20}=\dfrac{33}{80}\) (m\(^2\))

Vậy chọn C. \(\dfrac{33}{80}\)m\(^2\)

Answer 4

[Bùi Xuân Bảo]

chiều rộng bằng \(\frac34-\frac15=\frac{15}{20}-\frac{4}{20}=\frac{11}{20}\) diện tích hcn là \(\frac34\times\frac{11}{20}=\frac{33}{80}m^2\) chọn c bạn nhé

Answer 5

[Hiếu Trần Trung]

không biết làm thì cứ chọn C

Answer 6

[Hà Thanh Ngân]

đáp án là C nha

Answer 7

[Lê Đình Hoàng Bách]

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