Exercise 1.5 - Chapter 1 - Geometry - Term 1 - 4th Maths Guide Samacheer Kalvi Solutions

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A. Find the perimeter of the following figures 

Answer:

Perimeter = 8 + 3 + 5 + 6 = 22 cm

Answer:

Perimeter = 10 + 5 + 2 + 7 = 24 cm

Answer:

Perimeter = 7 + 4 + 7 + 4 = 22 cm

Answer:

Perimeter = 11 + 11 + 11 + 11 = 44 cm

Answer:

Perimeter = 10 + 5 + 10 + 5 = 30 cm

B. Solve the following
Question $1 .$
A side of a square-shaped sandbox in Gandhi Park measures $30 \mathrm{~cm}$. Determine the perimeter of the sand box.
Answer:
Side of a sand box $=30 \mathrm{~cm}$
Perimeter $=30+30+30+30$
$=120 \mathrm{~cm}$
 

Question 2.
Find the perimeter of a rectangle, whose sides are $12 \mathrm{~cm}$ and $8 \mathrm{~cm}$.
Answer:
Side of a rectangle are $12 \mathrm{~cm}$ and $8 \mathrm{~cm}$.
Perimeter $=12+8+12+8$
$=40 \mathrm{~cm}$
 

Question $3 .$
Find the perimeter of the triangle, whose sides are $13 \mathrm{~cm}, 5 \mathrm{~cm}$ and $14 \mathrm{~cm}$.
Answer:
Length of sides are $13 \mathrm{~cm}, 5 \mathrm{~cm}$ and $14 \mathrm{~cm}$
Perimeter $=13+5+14$
$=32 \mathrm{~cm}$

Question $4 .$
The adjacent sides of a parallelogram are $6 \mathrm{~cm}$ and $7 \mathrm{~cm}$. What is the perimeter of the parallelogram?
Answer:
Adjacent sides of a parallelogram are $6 \mathrm{~cm}$ and $7 \mathrm{~cm}$.
Perimeter $=6+7+6+7$
$=26 \mathrm{~cm}$
 

Question $5 .$
The sides of a trapezoid measures $8 \mathrm{~cm}, 7 \mathrm{~cm}, 4 \mathrm{~cm}$ and $5 \mathrm{~cm}$ respectively. What is the perimeter of the trapezoid?
Answer:
Side of a trapezium are $8 \mathrm{~cm}, 7 \mathrm{~cm}, 4 \mathrm{~cm}$ and $5 \mathrm{~cm}$.
Perimeter $=8+7+4+5$
$=24 \mathrm{~cm}$