I need help with this

8)2.86 cm^2

9) 100.48 m^2

10) 23.08 in^2

Step-by-step explanation:

8) In the figure , there's a right angled triangle in which a circle of radius 1 cm is inscribed in that triangle.

Area of the right angled triangle =

Area of the circle =

Area of the shaded portion ( although itz not shaded..... i mean remaining portion ) = 6 - 3.14 =2.86cm^2

9) In this figure there's a circle in which more 2 circles are inscribed in such a way that the center of the bigger circle is in the circumferences of both the circles.

Area of the bigger circle =

The small circles have equal diameter ( i.e. 8m) . So , Area of the small circles =

Area of the shaded region =

200.96 - 100.48 = 100.48 m^2

10) In the figure , the radius of the circle is 9 in.

So the area of a quarter =

Also in that circle a right angled triangle is formed. Area of that right angles triangle =

So the area of the region shaded =

63.58 - 40.5 = 23.08 in^2

step-by-step explanation: yes