Answer:
Dimensions of original room = 12 x 12 feet.
Explanation:
Let the size of old square room be a x a.
New dimension = ( a+4 ) x ( a + 6 )
We have area of the new room will be 144 square feet greater than the area of the original room.
So, ( a+4 ) x ( a + 6 ) = a x a + 144
a²+10a+24= a²+144
10a = 120
a = 12 feet.
Dimensions of original room = 12 x 12 feet.
The third one I think I'm not sure
Answer:
814
Step-by-step explanation:
A=2(wl+hl+hw)
=2((11×22)+(5×22))+(5×11))
= 814
Answer:
8
Step-by-step explanation:
2 x 6 = 12
12 - 4 = 8
So, our answer is 8.