1. Who / the / fat / person / your / group

Who is the faster person in your group

hocj tốt

Các cạnh thật là 

3 x 1000 = 3000 (cm) = 30 (m)

5 x 1000 = 5000 (cm) = 50 (m)

4 x 1000 = 4000 (cm) = 40 (m)

chu vi: 30 + 50 + 40 = 120 (m)

ĐS : 120m

Like mình nha !

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Đốt cháy hoàn toàn m gam một chất béo (triglixerit) cần 1,61 mol O2, sinh ra 1,14 mol CO2 và 1,06 mol H2O. Cho 7,088 gam chất béo tác dụng vừa đủ với dung dịch NaOH thì khối lượng muối tạo thành là

A. 7,312 gam

B. 7,612 gam

C. 7,412 gam

D. 7,512 gam

Hiđro hóa hoàn toàn 35,36 gam triolein cần vừa đủ V lít khí H2 (đktc). Giá trị của V là

A. 1,344

B. 4,032

C. 2,688

D. 0,448