Activity 6 Directions: Round to the highest place value.
1) 76 475 -
6) 98 423 -
2) 64 437 -
7) 29 560 -
3) 8 432-
8) 56 734 -
4) 72 779 -
9) 46 563 -
5) 33 542-
10) 1 643 -

Perimeter means length of the boundary.

The length of the boundary of a rectangle includes the sum of 2 lengths and 2 breadths. So, we can write the perimeter of rectangle as:

Where,

In the question,

It's given that l = 2x + 3 and b = 5x - 5

So, let's find the perimeter by using the formula,

⇛ P = 2[ (2x + 3) + (5x - 5)]

⇛ P = 2(2x + 3 + 5x - 5)

⇛ P = 2(7x - 2)

Opening the parentheses,

⇛ P = 14x - 4

Perimeter of the rectangle:

And we are done !!

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