Question
Pinky runs around a square field of side $75 m$, Bob runs around a rectangular field with length $160 m$ and breadth $105 m.$ Who covers more distance and by how much?
✓
Answer
Given that, Distance covered by Pinky in one round = Perimeter of the square
$= 4$ $\times$ length of a side
$= 4$ $\times$ $75 m = 300 m$
Distance covered by Bob in one round = Perimeter of the rectangle
$= 2$ $\times$ (length + breadth)
$= 2$ $\times$ $(160 m + 105 m)$
$= 2$ $\times$ $265 m = 530 m$
Difference in the distance covered $= 530 m – 300 m = 230 m.$
Thus, Bob covers more distance by $230 m.$
$= 4$ $\times$ length of a side
$= 4$ $\times$ $75 m = 300 m$
Distance covered by Bob in one round = Perimeter of the rectangle
$= 2$ $\times$ (length + breadth)
$= 2$ $\times$ $(160 m + 105 m)$
$= 2$ $\times$ $265 m = 530 m$
Difference in the distance covered $= 530 m – 300 m = 230 m.$
Thus, Bob covers more distance by $230 m.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Show that the following fractions is in the simplest form: $\frac{8}{11}$
→Find the circumference of a circle of radius $7\ cm$. $\Big[\text{Take} \ \pi=\frac{22}{7}\Big]$
→How quickly can you do this? Fill the appropriate sign. $('<', '=', '>')$
$\frac{3}{4} \square \frac{7}{8}$
→$\frac{3}{4} \square \frac{7}{8}$
Present age of father is $42$ years and his son is $14$ years. Find the ratio of age of father to the age of son when father was $30$ years old.
→A magic square is an array of numbers having the same number of rows and columns and the sum of numbers in each row, column or diagonal being the same. Fill in the blank cells of the following magic square:
Draw a rough sketch of a regular octagon. (Use squared paper if you wish). Draw a rectangle by joining exactly four of the vertices of the octagon.
How quickly can you do this? Fill the appropriate sign. $('<', '=', '>')$
$\frac{3}{5} \square \frac{6}{5}$
→$\frac{3}{5} \square \frac{6}{5}$
Draw a rough sketch of a regular hexagon. Connecting any three of its vertices, draw a triangle. Identify the type of the triangle you have drawn.
Find the perimeter of the figure:
How many times bigger is Shape D as compared to Shape C? What is the relationship between Shapes C, D and E?