Question

if the base and altitude of a triangle are doubled, what happens to the area​

Answer 1

area of old triangle = b× h

area of new triangle =2b×2h=4bh

Answer 2

Answer:

$The area of triangle becomes 4 times the original triangle$

Step-by-step explanation:

$Let the Base of original triangle be b and Height be h$

$Area of original triangle=\frac{1}{2}*b*h$

$Since Base and Height are doubled$

$Therefore Base=2b and Height=2h$

$Area of new triangle=\frac{1}{2}*2b*2h$

                                 $=4*[tex]\frac{1}{2}$*b*h[/tex]

                                 $=4*Area of original triangle$

                     $(Since area of original triangle=\frac{1}{2}*b*h)$

$Therefore the area of triangle becomes 4 times the original triangle.$