If your area is big enough, counting square units could take all day! Luckily, there’s a formula to help us find the area of squares and rectangles a lot faster. Multiplying the length of the square or rectangle by the width will give you the same answer as adding up all the square units. But don’t try to use this formula to find the area of a triangle or circle. The l × w formula only works to find the area of squares and rectangles. A rectangle has a length of 20 units and a width of 15 units. Which of the following number sentences would you use to find the area of the rectangle?

A
20 + 15

B
20 - 15

C
20 x 15

D
20 ÷ 15

May consider a group  g=({0,1},+)g=({0,1},+)where  ++  will work as the xor operator like we work in boolean algebra. note here, that ‘00’ and ‘11’ are not the usual 0 and 1 that we work with everyday. the elements are  called  ‘00’ and ‘11’ and  may not mean  zero (nothing) and one (single). ‘00’ is the identity for the given binary operator +, meaning that any element operated with ‘00’ gets us that element itself.  for a set  ss  in  g′g′  having more elements than just  {0,1}{0,1}  the values for  a+b∈sa+b∈s, such that  a∈s,b∈sa∈s,b∈s, have to be first defined, only then can you determine the value of  1+11+1. the answer could possibly have been  22  if oanswer is25,000

Answer volcanic eruptionsseismic waves from earthquakes;

D.