Answer:
B) 10 m
Step-by-step explanation:
Area is 20 and Height is 4
Ok so
AREA of a triangle is =1/2Base Times Height
work back
Area=20
Height=4
b=Base
20=1/2b*4
Simplify both sides of the equation.
20=2b
Flip equation
2b=20
Divide both sides by 2
b=10
Base=10 m
10m
Area of a triangle: [tex]\frac{1}{2}[/tex]bh
where 'b' = base and 'h' = height
plug in known values: 20 = [tex]\frac{4b}{2}[/tex]
cross-multiply: 4b = 40
b = 10
