all formulas of class 10 chapter 13 maths
Answers
Answer:
SURFACE AREA AND VOLUME (FORMULAES)
B.A. = BASE AREA
L.S.A = LATERAL SURFACE AREA
T.S.A = TOTAL SURFACE AREA
h = height
l = length
b = breadth
r = radius
a = side of cube
but in cone l, = slant height
L.S.A. OF CUBOID = 2h( l+b )
T.S.A ,,,,,,,,,,,,,,,,,,,,,, = 2(lb+bh+hl)
B.A ,,,,,,,,,,,,,,,,,,,,,= b×h
VOLUME ,,,,,,,,,,,,,,,,,, = l×b×h
L.S.A. OF CUBE = 4a²
T.S.A ,,,,,,,,,,,,,,,,,,= 6a²
B.A. ,,,,,,,,,,,,,,,,,. = a²
VOLUME ,,,,,,,,,,, = a³
L.S.A OF CYLINDER = 2πr× h
T.S.A ,,,,,,,,,,,,,,,,,,,,,,,,,,. = 2πr( r+h)
B.A. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, = πr²
VOLUME ,,,,,,,,,,,,,,,,,,, = πr²h
L.S.A. OF CONE = π×r×l
T.S.A ,,,,,,,,,,,,,,,,,,, = πr×( r + l )
B.A. ,,,,,,,,,,,,,,,,,,,. = πr²
VOLUME. ,,,,,,,,,,. = 1/3 πr²h
l² = r² +h²
L.S.A OF SPHERE = 4πr²
T.S.A. ,,,,,,,,,,,,,,,,,,,, = 4πr²
B.A. ,,,,,,,,,,,,,,,,,,,,,,,,. = 0
VOLUME ,,,,,,,,,,,,,,, = 4/3 πr³
L.S.A OF HEMISPHERE = 2πr²
T.S.A ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, = 3πr²
B.A. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,. = πr²
VOLUME ,,,,,,,,,,,,,,,,,,,,,,,,, = 2/3 πr³