Question

An attic floor is shaped like a triangle with a height of n yd and a base of 6 yd. Which expression represents the area of the floor?

1. n + 6
2. 3n
3. 3n2
4. 6n

Answer 1

we know that

the area of a triangle is equal to

`A=(1)/(2)*base*heigth`

in this problem we have

`heigth=n\ yd\\base=6\ yd`

to find the area of the floor , calculate the area of the triangle

substitute the values in the formula

`A=(1)/(2)*6*n`

`A=3n\ yd^(2)`

therefore

the answer is the option

2. 3n