Circumference =242cm, find the diameter. (Pi is 22/7)

2.

28, 42, 70 psi

3.

L/C amount = 37,74,11

4.

(y/ 12) 2 = 49, find y.

5.

This rectangle has an area of 54cm^2 and a length of 9 cm. Find the width.

6.

There are 30 teachers, 80% of whom wear glasses. How many people wear glasses?

7.

The original price of a dress is 150 yuan, and it is sold at a 60% discount, that is, how much is it?

8.

The price of the model box was reduced by 20%, and it was sold in 34 yuan, and its pricing was sought.

9.

The cuboid water tank is 1m in length, 0.5m in width and 0.2m3 in water.

After square meters, it is just half the depth of the water tank. Find out the depth of the water tank

Degree.

10.

The circumference of the circular gift box is 47. 1cm, and the radius of the gift box is found. (Pi is 3. 14)