Shannon is designing a snowman for a winter mural. She wants the head of the snowman to have a radius of 5 inches (5in.), and the midsection of the snowman to have a radius of 7in. How much bigger is the area of the snowman's midsection than the area of its head? In other words, how many more square inches of material will be needed to create the midsection of the snowman compared to the square inches needed to create its head?