Area of 4 walls.(FUNCTION)

DECLARE FUNCTION AREA(L,B,H)
CLS
INPUT"ENTER LENGTH";L
INPUT"ENTER BREADTH";B
INPUT"ENTER HEIGHT";H
PRINT"AREA OF 4 WALLS=";AREA(L,B,H)
END

FUNCTION AREA(L,B,H)
A=2*H*(L+B)
AREA=A 
END FUNCTION