Mathematics
A piece of wire of length 108 cm is bent to form a semicircular arc bounded by its diameter. Find its radius and area enclosed.
Related Questions
A roller has a diameter of 1.4 m. Find :
(i) its circumference
(ii) the number of revolutions it makes while traveling 61.6 m.
Find the area of the circle, length of whose circumference is equal to the sum of the lengths of the circumferences with radii 15 cm and 13 cm.
Each side of a triangle is doubled, the ratio of areas of the original triangle to the new (resulting) triangle is :
1 : 1
4 : 1
1 : 4
1 : 2