A rectangular walkway has been made by placing 10 flat square shaped concrete slabs along 200 rows. If the area of the flat surface of a concrete slab is
231.04 cm”, what is the length and the breadth of the walkway?​

Width = 152 cm

Length = 3040 cm

Step-by-step explanation:

We are given that the length of one flat square shaped slab is 231.04 cm².

Since it is a square, dimension of one side of the flat slab = √231.04 = 15.2 cm

Since there are ten flat slabs, with of the 10 slabs = 10 × 15.2 = 152 cm

Now these slabs are placed across 200 rows to form a walkway.

Thus, length = 200 × 15.2 = 3040 cm

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14