Help math formula question??

Question

4) Find the diagonal of a rectangle with l = 40 and w = 55.

5) The length of each leg of an isosceles right triangle is 4 cm. What is the length

of the hypotenuse?

Answer 1

Summertime =] here it is:

4) Find the diagonal of a rectangle with l = 40 and w = 55.

Right triangle

(Diagonal)² = (l)² + (w)²

(Diagonal)² =(40)² + (55)²

(Diagonal)² =1600 + 3025

(Diagonal)² = 4625

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Ans:: Diagonal = 68

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5) The length of each leg of an isosceles right triangle is 4 cm. What is the length of the hypotenuse?

The length of each leg of isosceles right triangle are equal and it is also the hypotenuse of the right triangle.

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Ans:: length of the hypotenuse = 4  cm

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hope this helps

Answer 2

Use the Pythagorean theorem.

c = sqrt(a^2 + b^2)

For question 4 just think of a rectangle as two triangles