Question

Tom is buying topsoil for the flower bed shown below. One bag of topsoil covers 15 square meters. How many bags of topsoil does Tom need to cover his flower bed?

Answer 1

We need 4 topsoils

Explanation:

I think your question is missed of key information that is the area of the flower bed, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

The flower bed is a triangle with its height is 5 cm and the base length is 12 cm, so we need to find out the area of it:

• S = Height*the base length = 5 * 12 = 60
  `m^(2)`

So the bags of topsoil does Tom need to cover his flower bed is:

`(Area of the flower bed)/(The area of the topsoil )` =
`(60)/(15)` = 4

We need 4 topsoils

Answer 2

Explanation:

Given:

Base, b = 15 m

Height, h = 4 m

Area of a triangle, A = 1/2 × b × h

Inputting values,

= 1/2 × 15 × 4

= 30 m^2

Since 1 bag of Topsoil = 15 m^2

Therefore, with 30 m^2 of flower bed.

1 bag of Topsoil/15 m^2 × 30 m^2

= 2 bags of Topsoil.