An object is in the shape of a frustum 50 cm high, Area of its top and bottom are 81 $m^{2}$ and 36 $m^{2}$ . Its volume is

2800

c m^{3}

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2750

c m^{3}

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2850

c m^{3}

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2700

c m^{3}

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Solution

The correct option is B 2850 $c m^{3}$
$V = \frac{50}{3} (81 + 36 + \sqrt{81 \times 36}) c m^{3}$
$= \frac{50}{3} \times 171 c m^{3} = 2850 c m^{3}$

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An object is in the shape of a frustum 50 cm high, Area of its top and bottom are 81 m2 and 36 m2. Its volume is

The correct option is B 2850 cm3V=503(81+36+√81×36)cm3 =503×171cm3=2850cm3

An object is in the shape of a frustum 50 cm high, Area of its top and bottom are 81 $m^{2}$ and 36 $m^{2}$ . Its volume is

The correct option is B 2850 $c m^{3}$
$V = \frac{50}{3} (81 + 36 + \sqrt{81 \times 36}) c m^{3}$
$= \frac{50}{3} \times 171 c m^{3} = 2850 c m^{3}$