Work out the perimeter of this semicircle with radius 3cm. Give your answer in terms of π​

Step-by-step explanation:

Given :-

A semicircle is given with radius of 3cm .

And we need to find the perimeter of the semicircle . We know the perimeter as ,

Perimeter = πr

Perimeter = 3cm × π

Perimeter = 3π cm .

Now there is the diameter of circle is 6cm . Hence totally the perimeter is ,

Perimeter = 3π + 6 cm

We were supposed to give answers in terms of π .

no

step-by-step explanation:

answer

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)