Trisha's swimming pool is 21 meters by 20 meters. She swam from one corner of the pool to he
the opposite corner. How far did Trisha swim?

its 29 m

Step-by-step explanation:

as a²= b²+c²

a²=(21)²+(20)²

a²=841

a=√841

a=29

here we need to consider the diagonal angle of the opposite corner that makes up the rectangle so the answer is 29 which is the diagonal length of the rectangle.

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry