To warn ships for underwater rocks- a lighthouse spreads a red coloured light over a sector of angle 80- to a distance of 16-5 km- Find the area in km 2 ofthe sea over which the ships are warned- Use -3-14

Radius= 16.5 km Area = 80/360 × π × 16.5^2 = 190.06 km^2 ...

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Standard X

Mathematics

Relation between Areas and Sides of Similar Triangles

To warn ships...

Question

To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle $80^{\circ}$ to a distance of 16.5 km. Find the area in $k m^{2}$ of the sea over which the ships are warned. (Use $π$ = 3.14)

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Solution

Radius= 16.5 km

Area = $\frac{80}{360}$ × $π$ × ${16.5}^{2}$ = 190.06 $k m^{2}$

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Q. To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle

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Q. Question 12
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Question 12
To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle $80^{\circ}$ to a distance of 16.5 km. Find the area of the sea over which the ships are warned.
$(U s e π = 3.14)$

To warn ships of underwater rocks, a light house spreads a red colored light over a sector of angle 80^o to a distance of 16.5 km. The area of the sea over which the ships are warned is

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To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle 80∘ to a distance of 16.5 km. Find the area in km2 of the sea over which the ships are warned. (Use π = 3.14)

Radius= 16.5 km Area = 80360 × π × 16.52 = 190.06 km2

To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle $80^{\circ}$ to a distance of 16.5 km. Find the area in $k m^{2}$ of the sea over which the ships are warned. (Use $π$ = 3.14)

Radius= 16.5 km

Area = $\frac{80}{360}$ × $π$ × ${16.5}^{2}$ = 190.06 $k m^{2}$