Question

∆ PQR is an isosceles right triangle if PQ = 4 cm then what is the length of diagonal PR​

Answer 1

Answer:

As PQR is a isosceles right triangle,

- PQ=4cm

- In Isosceles Tri. Two sides are equal

- angle P = angle R

- PQ=QR=4cm

- length of diagonal(by Pythagoras Theorem)

- (PR)^2=(PQ)^2+(QR)^2

-(PR) ^2= (4)^2+(4)^2

(PR)^2= 16+16

(PR)^2= 32

(PR) = underoot 32

PR= 2root4.

Answer 2

Step-by-step explanation:

find the side of a cube of volume 1 m^3