area of 4 walls of room is 144cm sq and height is 4 cm then perimeter is
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Answered by
1
Answer:
Step-by-step explanation:
L=LENGTH, B=BREADTH, H=HEIGHT.
L=4B
H=4
AREA=2ENDS(B*H)+2SIDES(L*H).
AREA=2(B*H)+2(L*H)
144=2(B*4)+2(4B*4)
144=2*4B+2*16B
144=8B+32B
144=40B
B=144/40 =3.4
L=4*3.6=14.4
AREA OF THE FLOOR=L*B
AREA=3.4*14.4=45.56 cm
Answered by
1
lateralas S A of cuboid =2×(L+b)×h
by putting the value of h
144=2×(L+B)×4
9=L+B
P. of rectangle =2×L+B
18cm2
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