Question

a paper is in the form of a rectangle pqrs in which PQ is equal to 10 centimetre and you are is equal to 7 cm two semi circular motions with q r and ps as diameters are cut off find the area of the remaining part

Answer 1

area of ramaining part = area of rectangle - area of 2 semicircles of diameter 7cm

=10*7 - 22/7 * 7/2 *7/2

= 70-77/2

=( 140 - 77 )/2

= 63/2
= 21.5

Answer 2

area of rectangle is 70cm.
1÷2×πrsqaure
11÷7×3.5×3.5
11×0.5×3.5
19.25
19.5 + 19.5
39
area of remaining part =70-39
=31cmsquare