The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to

Question

The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to (A) 1.2 × 102 mm 2 (B) 1.2 × 103 mm 2 (C) 1.2 × 104 mm 2 (D) 1.2 × 106 mm 2

Tardigrade Admin · Accepted Answer

Surface area of a cylinder =2 π r h =2 × 3.14 × 2 cm × 10 cm =125.6 cm 2=125.6 ×(10 mm )2=1.2 × 104 mm 2

Q. The surface area of a solid cylinder of radius $2.0 c m$ and height $10.0 c m$ is equal to

$1.2 \times 1 0^{2} m m^{2}$

$1.2 \times 1 0^{3} m m^{2}$

$1.2 \times 1 0^{4} m m^{2}$

$1.2 \times 1 0^{6} m m^{2}$

Surface area of a cylinder $= 2 π r h$
$= 2 \times 3.14 \times 2 c m \times 10 c m$
$= 125.6 c m^{2} = 125.6 \times (10 mm)^{2} = 1.2 \times 1 0^{4} m m^{2}$

Q. The surface area of a solid cylinder of radius 2.0cm and height 10.0cm is equal to

1.2×102mm2

1.2×103mm2

1.2×104mm2

1.2×106mm2