Question

all the formula of surface areas and volume (class 9)

Answer 1

FORMULAS:

• SURFACE AREA OF A CUBOID=2(LB+BH+HL)

•     SURFACE AREA OF A CUBE=6A²
• CURVED SURFACE AREA OF A CYLINDER=2πRH
• TOTAL SURFACE AREA OF A CYLINDER=2πR(R+H)
• CURVED SURFACE AREA OF A CONE=πRL
• TOTAL SURFACE AREA OF A RIGHT CIRCULAR CONE=πRL+πR²,IE.,πR(L+R)
• SURFACE AREA OF RADIUS R=4πR²
• CURVED SURFACE AREA OF A HEMISPHERE=2πR²
• TOTAL SURFACE AREA OF A  HEMISPHERE=3πR²
• VOLUME OF A CUBOID=L×B×H
• VOLUME OF A CUBE=A³
• VOLUME OF A CYLINDER=πR²H
• VOLUME OF A CONE=1/3πR²H
• VOLUME OF A SPHERE OF RADIUS R=4/3πR³
• VOLUME OF A HEMISPHERE=2/3πR³

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Answer 2

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