294, Lol you said it yourself. But there you go c:
Step-by-step explanation:
Hello all beautiful your day
Let l length, w width, p perimeter:
l=12+w
2(l+w)=p
2((12+w)+w)= 100
2(12+2w)=100
12+2w=50
2w=38
w=19
l=12+w=12+9= 21
l=21
Isosceles triangle and an equilateral because all of its angles are alway going to be 90 or less than 90
Step-by-step explanation:
Yes that would be the correct answer