The total surface area of a solid hemisphere whose radius is $a$ units, is equal to

2 π a^{2}

sq. units

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3 π a^{2}

sq. units

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3 π a

sq. units

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3 a^{2}

sq. units

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Solution

The correct option is B $3 π a^{2}$ sq. units
We have,
$r = a u n i t s$

We know that the total surface area of the hemisphere
$= 3 π r^{2}$

So,
$= 3 π a^{2} s q . u n i t s$

Hence, this is the answer.

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The total surface area of a solid hemisphere whose radius is a units, is equal to

The correct option is B 3πa2 sq. unitsWe have,r=a unitsWe know that the total surface area of the hemisphere=3πr2So,=3πa2 sq. unitsHence, this is the answer.

The total surface area of a solid hemisphere whose radius is $a$ units, is equal to

The correct option is B $3 π a^{2}$ sq. units
We have,
$r = a u n i t s$

We know that the total surface area of the hemisphere
$= 3 π r^{2}$

So,
$= 3 π a^{2} s q . u n i t s$

Hence, this is the answer.