Math, asked by shobanamega7582, 10 months ago

I want clear answer for this question....
it's urgent help me​

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Answers

Answered by aiesharehana
5

a) d=2.5cm

r=2.5/2=1.4cm

C of semicircle +diameter

=πr+d

=22/7×1.4+2.8

=7.2

b) C of a semicircle +3 sides of a rectangle

d = 2.8 cm

r=2.8/2=1.4cm

P=πr+1.5 cm+2.8+1.5

22/7×1.4+5.2

4.4+5.8

=10.2cm

d) C of semicircle +2 cm 2cm

πr+4 cm

22/7×14

4.4+4

=8.4

THE ANT HAS TO TAKE A LONGER ROUND ON FOOD PIECE (b)

Answered by utkarshvikas
1

Step-by-step explanation:

to find the answer we have to first find the perimeter of each figure.

a. circumference of half circle=πr

=22/7×2.8/2

=22/7×28/10×2

=4.4 cm

so, total perimeter of figure a.= 4.4+2.8

=7.2 cm

b.circumference of half circle=4.4cm(we have find in figure a.)

total perimeter of figure b.=4.4+1.5+1.5+2.8

=10.2 cm

c.circumference of half circle=4.4 cm

total perimeter of figure c.=4.4+2+2

=8.4 cm

half circumference of circle=2πr/2

=πr. as I have done it in equation.

for figure B. ant have to take longer round because it have more perimeter.

hope it helps you..

#answerwithquality &#BAL

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