1.240 2.36 3. 18 4. Upper left front

5.2 * 3.14 * 0.5 * 8 = 25.12 (square meter)

6. How many cubes are there? 1+2*2+3*3+4*4=30 (pieces)

p45

1. Omit 2. Omit 3. Rotation and translation 4. leave out

P46

1.( 1) points to 3 (2) points to 10 2. Omit 3. There are 1 bars to draw 4 circles.

4. the incision is a.

P47

1.(1)1500m (2) 20 degrees southwest of the square; 3) Northwest of the square 15 degrees; 100 meter.

2.( 1,5) (2,3) (6,4) (5, 1)

3. Brightness is 30 degrees in the small thing and 30 degrees in the northwest. leave out

P48

It's simple. Do it yourself

Remember to adopt I have been calling for a long time. Absolutely correct answer.