You have a large tree in your front yard. at noon the tree casts a circular shadow with a radius of 9 m. you are now planting a tree in your back yard. at noon it's shadow will have a radius of 4 m. how much of your yard is shaded by the two trees at noon?

  97π m² ≈ 304.7 m²

Step-by-step explanation:

The area of a circle is given by the formula ...

  A = πr²

The sum of the areas of the two circles is ...

  A = π(9 m)² + π(4 m)² = π(81 +16) m²

  = 97π m² ≈ 304.7 m²

step-by-step explanation:

quartic functions has x = –1 and x = –2 as its only two real zeroes:

f(x) = a(x+2)(x+1)   a: real number