8b The following three shapes are based only on squares,
semicircles, and quarter circles. Find the perimeter and the area of
each shaded part. Give your answer as a completely simplified
exact value in terms of rt (no approximations).
Just the perimeter

P = 36 - 9π

Step-by-step explanation:

Similar to solving the area

look at the pictureeeee

Ur welcome hahah

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )