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 ?

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 chieu dai cua mot hinh chu nhat tang them 2,5% thi chieu rong phai giam di bao nhieu phan tram de dien tich khong thay doi ?

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 ?

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 tang them 60% thi chieu rong cua hinh do giam di baonhieu phan tram de dien tich cua hinh nay khong thay doi

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 tang chieu dai cua hinh hop chu nhat 25% thi phai giam chieu rong bao nhieu phan tram de dien tich khong thay doi ?

neu tang chieu dai cua mot hinh chu nhat tang them 25% thi chieu rong phai tang hay giam bao nhieu phan tram de dien tich hinh chu nhat khong doi ?

giup minh voi !!