Question

The length of a rope by which a cow is tethered is increased from 16m to 23m. How much additional area can the cow graze now

Answer 1

If we tie the cow with a rope then it forms a sector where the cow can graze.

Remember it's always taken at 90°

Thus area of sector = area that cow can graze

Area of sector = Ф/360*πr²

Area increased for cow = 90/360*π*23*23 - (90/360*π*16*16)

90/36*22/7*( 23*23-16*16 )

1/4*22/7*529-256

1/4*22/7*273

286m² is the increased area where the cow can graze.

Answer 2

Answer:

If we tie the cow with a rope then it forms a sector where the cow can graze.

Remember it's always taken at 90°

Thus area of sector = area that cow can graze

Area of sector = Ф/360*πr²

Area increased for cow = 90/360*π*23*23 - (90/360*π*16*16)

90/36*22/7*( 23*23-16*16 )

1/4*22/7*529-256

1/4*22/7*273

286m² is the increased area where the cow can graze.

Step-by-step explanation: