Bài 4: Trang 177 - sách giáo khoa (SGK) toán tiếng Anh lớp 4A rectangular field with a length of 12...

{
"content1": "The width of the rectangular field is \(\frac{2}{3}\) x 120m = 80m.",
"content2": "The area of the rectangular field is 120m x 80m = 9600m2.",
"content3": "As every 100m2 harvested 50kg of rice, we can calculate the total amount of rice harvested in the field.",
"content4": "We have 9600m2 / 100m2 = 96 portions of 100m2 in total.",
"content5": "Therefore, the total amount of rice harvested is 96 x 50kg = 4800kg.",
"content6": "As 1 quintal is equal to 100kg, the total amount of rice harvested in quintals is 4800kg / 100kg = 48 quintals."
}