a Given
Answer
a) Area of door = Area of semi-circle of radius 5 + area of a square of length 10
[tex]\begin{gathered} \pi r+s^2 \\ =\frac{22}{7}\times5+10^2 \\ =115.71 \end{gathered}[/tex]
b) Full length of rectangle = 36+20+36+20 = 112
Breadth of rectangle = Radius of Semi circle + Length of square = 5+10 =15
Area of dollhouse = Area of full rectangle + Area of triangle 1 + Area Of triangle 2 - Area of door
Area = lxb + 1/2 b x h +1/2 b x h - 115.71
[tex]\begin{gathered} 112\times15+\frac{1}{2}\times25\times10+\frac{1}{2}\times20\times10-115.71 \\ =1680+125+100-115.71 \\ =1789.29 \end{gathered}[/tex]
