Question

Find the distance covered by the ant moving with food particle along the outlined shape.

Options :-
6.4 cm
8.4 cm
12.8 cm
21.6 cm

Required Own Answer :-

Answer 1

Answer:

Option 3>21.6cm.______

Answer 2

${ \huge{ \bold{ \underline{ \color{red}{Answer}}}}}$

↦ Look at arc AC

It's an semicircle with ,

• Diameter = 2.8 cm
• $Radius = \frac{2.8}{2} = 1.4cm$

➥ So, it's circumference = πr

$↦ \frac{22}{7} \times 1.4 \:$

$↦22 \times 0.2$

$↦4.4 \: cm$

➥ Now , have a look on triangle ABC

As the ant is moving around side AB and BC , so distance covered by ant in that triangle part :-

$↦ \: 2 + 2 = 4 \: cm$

${ \bold{ \boxed{↦total \: distance \: = 4.4 + 4 \: = 8.4 \: cm}}}$

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${ \huge{ \bold{ \underline{ \color{blue}{Formulas:}}}}}$

Circumference of a circle is = 2πr

Circumference of a semicircle = πr