A wire in the shape of a rectangle of length 18cm and with 15cm of a c

1.	A wire in the shape of a rectangle of length 18cm and with 15cm of a circle find the radius and area of a circle
Answer» The wire is in the shape of rectanglelength = 18 cmbreadth = 15 cm now the wire is bent into a circle so perimeter of rectangle = circumference of the circle 2(l+b) = 2πr2(18 +15) = 2πr2×33 =2πr66 =2πr 66× 7/ 2×22 = r33× 7/22 =r21/2 = r10.5 = r so the radius of the circle is 10.5 cm hi 10.5 CM 34 6.15 cm

A wire in the shape of a rectangle of length 18cm and with 15cm of a circle find the radius and area of a circle

Answer»

The wire is in the shape of rectanglelength = 18 cmbreadth = 15 cm

now the wire is bent into a circle

perimeter of rectangle = circumference of the circle

2(l+b) = 2πr2(18 +15) = 2πr2×33 =2πr66 =2πr

66× 7/ 2×22 = r33× 7/22 =r21/2 = r10.5 = r

so the radius of the circle is 10.5 cm

hi 10.5 CM 34 6.15 cm