Question

Lawn20 meters-WalkwayGazeboRHQ15 metersA bag of grass seed costs $64.26. If agardener wants to calculate the costofgrass seed required to plant the lawn,what additional information wouldhe need to know?A the location of the walkwayBthe perimeter of the lawnс the weight of one bag of grass seedD the area that can be covered byone bag of seed

Answer 1

He needs option D. Because the perimeter is not the total area (it is only the distance in meters/centimeters that surround the lawn, we need to know how much area a bag of grass seeds covers, for us to know how many to buy. Also, we need the area of the walkway, since it is not covered by grass

The area of a triangle is:

`Area\text{ = }(b(h))/(2)`

But, since there is a walkway that isn't covered in grass, we need to subtract the circle area from the triangle area

Area of circle:

`Area\text{ = }\pi r^2`

Then the total area of the lawn :

`Area\text{ Lawn = }(b(h))/(2)\text{ - \lparen}\pi r^2)`