Respuesta :
Answer:
Multiply the length by the width to find the area in square metres and then multiply that figure by 0.03 Kg to find out how much seed you'll need.
Step-by-step explanation:
Answer:
20 bags of seed is needed for the new lawn
Step-by-step explanation:
To answer this question, first find the area of the lawn and divide the area calculated by the number of square feet per bag of seed.
A lawn is assumed to have a rectangular shape, the area (A) of the lawn therefore is
A = L x W
Where: A = Area of lawn
L = Length of lawn
W = Width of lawn
A = L x W
L = ?
W = 60 ft
To find the length, use the formula for the perimeter of a rectangle since the lawn is assumed to a rectangular shape
Perimeter (P) = 2(L+W)
P = 300 ft
300 = 2(L + 60) ft
300 = 2L + 120
Subtract 120 from both sides
300 - 120 = 2L + 120 - 120
180 = 2L
Divide both sides of the equation by the coefficient of L which is 2
180/2 = 2L/2
90 = L
L = 90 ft
That is, the length of the lawn is 90 ft
To calculate the area of the lawn
A = L x W
L = 90 ft
W = 60 ft
A = 90 ft x 60 ft
A = 5400 square feet
This means that the area of the lawn is 5,400 square feet
To get the number of bags of seed that will cover the lawn, divide the area of the lawn by the number square feet that a bag will cover.
Number of bags of seed = Total Area of lawn/Number square feet per bag.
Total Area = 5400 square feet
Number square
feet per bag = 270
Number of bags = 5400/270
= 20 bags of grass seed
20 bags of seed is needed for the new lawn
