Question

Find the perimeters of these figures​

Answer 1

Answer:

28

Step-by-step explanation:

the perimeter of rectangle is 28

because

formulae:-

2*l+b

Given,

l=4 and b=10

so,

2(4+10)

=2(14)

on simplifying we get

28.

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Answer 2

Answer:-

Formula to find the perimeter of a rectangle=2(l+b)[here l = length and b = breadth]

Perimeter of this rectangle=2(10+4)cm

=(2×14)cm

=28cm

Formula to find the perimeter of a half circle=πr+2r[here r is = radius of the half circle]

Perimeter of this half circle= (3.14 × 2 + 4)cm

= 10.28cm

Perimeter of the whole figure=(28+10.28)cm

=38.28cm

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