# Flowerbed 2

Around the square flower bed in a park is sidewalk 2 m wide. The area of ​​this sidewalk is 243 m2. What is the area of the flowerbed?

Result

S =  805.1 m2

#### Solution:

$S + 243 = S_2 \ \\ a^2 + 243 = (a+2\cdot 2)^2 \ \\ a^2 + 243 = a^2 + 2a\cdot 4+4^2 \ \\ 243 - 16 = 8 a \ \\ a = (243-16)/8= 28.38 \ m \ \\ \ \\ S =a^2 = 28.38^2 = 805.1 \ m^2$

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

## Next similar math problems:

1. 3x square
Side length of the square is 54 cm. How many times increases the content area of square if the length of side increase three times?
2. Tripled square
If you tripled the length of the sides of the square ABCD you increases its content by 200 cm2. How long is the side of the square ABCD?
3. Star
Calculate the content of the shaded part of square with side 28 cm.
4. Tiles
How many square tiles with the content 121 cm2 has to be ordered for the paving of the square room with a side length of 2.75 meters?
5. Square garden
On the plan with a scale of 1:1500 is drawn as a square garden with area 81 cm2. How many meters is long garden fence? Determine the actual acreage gardens.
6. Areaf of ST
It is given square DBLK with side |BL|=13. Calculate area of triangle DKU if vertex U lie on line LB.
7. Hotel
The hotel has a p floors each floor has i rooms from which the third are single and the others are double. Represents the number of beds in hotel.
8. Annulus
Calculate the area of two circles annulus k1 (S, 3 cm) and k2 (S, 5 cm).
9. Annulus
Two concentric circles form an annulus of width 10 cm. The radius of the smaller circle is 20 cm. Calculate the content area of annulus.
10. 7 triangle
The triangle area is 26.7 cm2. Determine the side length l if appropriate height hl = 45.3 cm.
11. Simplify
Simplify the following problem and express as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5]
12. Alley
Alley measured a meters. At the beginning and end are planted poplar. How many we must plant poplars to get the distance between the poplars 15 meters?
13. Simplify 2
Simplify expression: 5ab-7+3ba-9
14. Expression
Solve for a specified variable: P=a+4b+3c, for a
15. Holidays - on pool
Children's tickets to the swimming pool stands x € for an adult is € 2 more expensive. There was m children in the swimming pool and adults three times less. How many euros make treasurer for pool entry?
16. Complementary angles
Two angles are complementary. If one angle measures 10°, what is the measure of the second angle?
17. Expressions
Expression (3a-7).(3a+7) is identical with: ?