The radius of a circle is 5 in. Find its area in terms of Pie

Answer soon(fast) 15 pts-brainliest? for right answer with small explination a restaurant catered a party for 40 people. a child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. the total cost of the dinner was $728. how many children and adults were at the party? use the table to guess and check.(i couldn't get the graph onto the question)                                8 children and 32 adults9 children and 31 adults10 children and 30 adults12 children and 28 adults

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?