Question

NEEDED ASAP PLS
A RECTANGLE HAS A DIAGONAL OF 29CM, FIND ITS LENGTH IF THE WIDTH IS 20CM

Answer 1

Answer:

From Pythagoras theorem

l²+b²=(29)²

l²+20²=29²

l=√441

l=21cm

Answer 2

Answer:

21 cm

Step-by-step explanation:

Given,

Diagonal = 29 cm, Width = 20 cm

The Pythagorean equation is c² = a² + b²

Here,

c = 29 cm, b = 20 cm, a = ?

Now,

Rearrange the equation to solve for side a.

∴ a² = c² - b²

⇒ a² = 29² - 20²

⇒ a² = 841 - 400

⇒ a² = 441

⇒ a = 21

Therefore,

Length = 21 cm

Hope it helps!