This is the fifth part of the Metrobank-MTAP Math Challenge Questions for Grade 7. In this post, we discuss the solutions to number 41-50. You can also read the solutions to **1-10**, **11-20**, **21 – 30**, and **31-40**.

**41.)** Each square in the figure has side length 1. The curve each square is a circular arc with center at a corner of the square. What is the area of the shaded region?

Solution: will be discussed in a separate post.

**Answer:** 8 square units

**42.)** What is the least common multiple of 168 and 420? Continue reading