Saturday

December 20, 2014

December 20, 2014

Posted by **Bella S** on Sunday, September 11, 2011 at 7:20pm.

A. The variable s presents the side length of square mat. Why can you use the equation s X s=8100 to to determine the aide length of th square mat?

B. How do yy know that the aide length of the square mat must be between 50 cm and 100 cm?

- Math -
**Damon**, Sunday, September 11, 2011 at 7:36pmarea = length * width

for the square mat s is the length and the width

so

Area of square mat = s*s = s^2 = 8100 cm^2

so s = sqrt(8100) = 90 cm

The area of each of the big rectangular mats is twice the square one , therefore 2*8100 = 16,200 cm^2 and it is 90cm by 180 cm

Lay a square room out with the square mat in upper left, one rectangle sticking out from it right

then three rectangles below those two sticking down

This gives you a square room, 3s * 3 s or 270cm * 270 cm = 72,900 cm^2

50^2 = 2,500 too small

100^2 = 10,000 too big

right answer is 90^2 = 8,100

**Answer this Question**

**Related Questions**

3 grade math ms sue - 1- IS THE AREA OF A PAPERBACK BOOK COVER CLOSER TO 28 ...

math - a square room has sides that each measure 5 feet.How many square feet of ...

math - a square kitchen floor can be exactly covered withe square tiles that are...

math - a house has two rooms of equal area. one room is square and the other ...

Algebra 1 - A landscaper has two gardens: one is a square and the other is a ...

geometry - a 16 by 18 foot rectangular section will be covered by square tiles ...

7 grade math - The rectangular base of a box has a perimeter of 60cm. The base ...

Grade 7 math - The rectangular base of a box has a perimeter of 60cm. The base ...

math - The rectangular base of a box has a perimeter of 60cm. The base is twice ...

math .please help its worth alot of my grade :s - The rectangular base of a box...