a wall is 15 cm long,0.2m wide and 2m high. how many bricks of size 15cm×8cm×5cm each are required to construct the wall?

100 bricks are required to construct the wall.

Step-by-step explanation:

All calculations should be done with unit in centimetres.

volume of the wall = length * width * height

                               =  15 * 20 * 200

                               = 60000 cm³

one brick volume =  length * width * height

                             =  15 * 8 * 5

                            = 600 cm³

So to fill the entire wall with x walls:  volume of wall / one brick volume

                                                         → 60000 / 600

                                                         → 100 bricks

use formula for the circle a=3.14

step-by-step explanation:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3