11. Square ABCD shown has sides of length 10 centimeters. The unshaded portions are both semicircles. Calculate the area of the shaded portion to
the nearest tenth of a square centimeter. *

Ineed the answers for this one as well!

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?

Identify the number as a regional or irrational.explain. 291.87