dien tich hinh chu nhat tang hay giam bao nhieu phan tram neu chieu dai tang len 20 phan tram va chieu rong giam di 20 phan tram?

neu chieu dai cua mot hinh chu nhat tang them 60% thi chieu rong cua no phai giam di bao nhieu phan tram de dien tich cua hinh khong thay doi

Mot hinh chu nhat neu tang chieu dai cua no them 20% thi phai giam chieu rong di bao nhieu phan tran de dien tich khong thay doi.

hoi neu chieu dai cua mot hinh chu nhat giam di 20% thi chieu rong cua hinh do phai tang them bao nhieu phan tram de dien tich cua hinh khong thay doi

neu tang chieu dai hinh chu nhat them 20% do dai cua no ohai giam chieu rong  di bao nhieu % do dai mcua no de dien tich hinh chu nhat do tang them 8%

cau 1 : mot cua hang ban lai 20% so voi gia ban . Hoi cua hang lai bao nhieu phan tram so voi gia von

cau 2 : de dien tich mot hinh chu nhat tang len gap doi ma chieu rong chi tang them 25% thi chieu dai phai tang them bao nhieu phan tram 

cau 3 : neu giam do dai canh cua mot hinh vuong di 10% thi dien tich cua hinh vuong do giam di bao nhieu phan tram

cau 4 : neu tang do dai canh cua mot hinh vuong them 10% thi dien tich cua hinh vuong do tang them bao nhieu phan tram

hoi neu chieu dai cua mot hinh hinh chu nhat giam di 37.5 % thi chieu rong cua hinh do phai tang them bao nhieu phan tram de dien tich hinh khong doi ?

hoi neu chieu dai cua mot hinh chu nhat tang them 60% thi chieu rong cua hinh do phai giam di bao nhieu phan tram de dien tich cua hinh khong thay doi ?

Dien tich hình chu nhat tang bao nhieu phan tram biet chieu dai giam 20% so do cua no va chieu rong tang 30% so do cua no?