Question

The square water tank has its sides equal to 40m.There are 4 semi-circular grassy plots all around it. Find cost of surfing the plots at RS. 1.25 per square. Meter. (use P=3.14)

Answer 1

Answer:

5142.5/- mark this answer as brainliest answer

Step-by-step explanation:

say there are two circles and one square therefore total area equal to area of two circles + square area of circle is 1257 for two circles equal to 2514 area of square equal to 1600 total area equal to 4114 cost equal to 4114 x 1.25 equal to 5142.5

Answer 2

☆━━━━━━QUESTION━━━━━━☆

The square water tank has its sides equal to 40m.There are 4 semi-circular grassy plots all around it. Find cost of surfing the plots at RS. 1.25 per square. Meter. (use P=3.14)

꧁SOLUTION꧂

✧♥༻༺♥✧

☆GIVEN☆

• The side of square water tank=40m
• The 4 semi circular grassy plot
• The cost of surfing the plots at 1.25 per metre
• use π=3.14

☆According to the above information☆

☆Radius of semi circle=side of square/2

☆Radius of semi circle=40/2

☆Radius of semi circle=20m

☆NOW, AREA OF 1 GRASSY PLOT☆

⟹AREA=πr²/2

⟹AREA=π*20²/2

⟹AREA=400π/2

⟹AREA=200πm²

☆AREA OF 4 SEMI GRASSY PLOT☆

⟹4*200π

⟹800πm²

☆Rate of surfing plot at 1.25 per metre square☆

⟹Total cost of surfing plots=800π*1.25

⟹Total cost of surfing plots=800*3.14*1.25

⟹Total cost of surfing plots=Rs.3140