Question 7
A pentagon has side length 10 cm. Five identical circles are drawn with the five vertices as centres, as shown. Find the shaded area in $\text{cm}^2$. Use $\pi=3.14$.
Diagram convention: adjacent circles are externally tangent along the pentagon’s sides, and the shaded parts are the non-overlapping sectors inside the pentagon. These conditions are depicted but not stated explicitly in the source.
Diagram convention: adjacent circles are externally tangent along the pentagon’s sides, and the shaded parts are the non-overlapping sectors inside the pentagon. These conditions are depicted but not stated explicitly in the source.