(a)10 m(b) 15 m(c) 20 m18. A rope by which a calf is tied is increased

1.	(a)10 m(b) 15 m(c) 20 m18. A rope by which a calf is tied is increased from 12 m to 23 m. How much addtitional grassy groundshall it graze?(a) 1120 m2(b) 1250 m(c) 1210 m2(d) 1200 m210 If tha area of a triangle whose base is 22 cm is equal to the area of a circle of radius 7 cm, find the
Answer» original area cow is grazing=(area of whole circle of radius 12 m)= πr^2=π144=144π sq. m new area cow is grazing=(area of circle of radius 23 m)=πR^2=π529=529π sq. m increased area=(529π-144π)sq. m=(529–144)π sq. m =385π sq.m=1210 sq. m hit like if you find it useful

(a)10 m(b) 15 m(c) 20 m18. A rope by which a calf is tied is increased from 12 m to 23 m. How much addtitional grassy groundshall it graze?(a) 1120 m2(b) 1250 m(c) 1210 m2(d) 1200 m210 If tha area of a triangle whose base is 22 cm is equal to the area of a circle of radius 7 cm, find the

Answer»

original area cow is grazing=(area of whole circle of radius 12 m)= π*r^2=π*144=144*π sq. m

new area cow is grazing=(area of circle of radius 23 m)=π*R^2=π*529=529*π sq. m

increased area=(529*π-144*π)sq. m=(529–144)*π sq. m

=385*π sq.m=1210 sq. m

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