Question

Greg is landscaping a garden. The diagram shows the plan of the garden. What is the total area of the garden?

Answer 1

15 times 12 is 300
5 times 12 is 60 then divide by 2 so that's 30
300+30 is 330 units squared

Answer 2

we know that

the area of the garden is equal to the area of a t-r-a-p-e-z-o-i-d

`A=(1)/(2)*(L1+L2)*h`

where

L1 and L2 are the parallel bases

h is the height between the two parallel bases

in this problem we have

`L1=20\ m\\L2=15\ m\\h=12\ m`

substitute the values in the formula

`A=(1)/(2)*(20+15)*12`

`A=210\ m^(2)`

therefore

the answer is

`A=210\ m^(2)`