Một hình chữ nhật có chu vi là 140m. Tính diện tích của hình chữ nhật biết rằng nếu kéo chiều rộng thêm 1/3 chiều rộng và giữ nguyên chiều dài thì được một hình vuông. Diện tích của hình chữ nhật đó là? (giải chi tiết giúp tớ nha mọi người!)
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Spring is a time for doing things. It seems everyone is full of energy. The days become warmer so everyone spends more time outside. Winter is finishing, so the countryside becomes greener.
I love watching the new flowers in my garden in spring. I watch the tulips grow and then I know winter is over. I wonder what it’s to live in countries that don’t have four seasons.
They miss out on what it’s to welcome spring and see everything come alive. Spring has to be the best season. It definitely makes you feel very positive about life.
It’s a good time to clean your house from top to bottom. We call this spring cleaning. Spring also means the weather gets warmer and you can do more things outside.
#tham khảo
There are four seasons in one year, every season leaves me a special impression.
However, autumn is perhaps the one that I best. It usually lasts from July to
September of the year. The weather is quite cool and pleasant. The sky is blue and pretty
high while the sun is warm. Cool winds bring the scent of new paddy fields or guava
flavor in the garden. On the two sides of the road, the colorful chrysanthemum show off
its beauty in the sunshine. All the children are eagerly waiting for the school day, our
parents take us to stores to buy books and other personal items preparing for new school
year. Everyone is all looking forwad to seeing their friends after three months of summer
vacation. Especially, in the middle of Autumn, we also breake the moon cake very
happily. How wonderful is it! I hope autumn will come soon.
Tham khảo
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A} Diện tích hình thang là :
{ 4,5 + 6 } x 8 : 2 = 42 { dm }
B} Chiều cao hinh thang là :
{2,3 + 4,1 } :2 = 3,2 { dm }
Diện tích hình thang là :
{ 2,3 + 4,1 } x 3,2 : 2 = 10 , 24 { dm }
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tran quang dung: Bn ko trl đc thì thôi chứ đừng ghi linh tinh.