1, because it is a right-angled trapezoid, the waist of the right-angled side is short, that is to say, the length of the long side can be set to x meters, and the length (height) of the short side is 60%x meters.

According to the meaning: x+60%x= 180*4/9.

1.6x =80

x =50

Height and length: 50 * 60% = 30m.

The sum of the upper sole and the lower sole is 180-50-30 = 100m.

Because (upper bottom+lower bottom) * height /2= trapezoidal area.

So 100*30/2= 1500.

Answer: The trapezoidal area is 1500m2.

2. Solution: Let Party A and Party B work for X days.

According to the meaning of the question: (118+115) x+4/15 =1.

Multiply both sides by 90:5x+6x+24 = 90.

x=6

Answer: A actually works for 6 days.

Solution: suppose it takes x minutes for them to meet again.

According to the meaning of the question:18.84x+12.56x =100 * 3.14.

3 1.4x=3 14

x= 10

(18.84-12.56) *10 = 62.8m.

A: When we met again, the cat walked 62.8 meters more than the mouse.

This guy, I'm in sixth grade, too. Do me a favor and choose me.