Question

the daigonal is 10cm then find the perimeter​

Answer 1

Step-by-step explanation:

as all sides of a square have 90° angle

by Pythagorean triplet

H² = p² + b²

H = 10 (given)

therefore

10² = p² + b² (p = b as in a square all sides are equal)

therefore

100 = 2 p²

p = 5√2cm

perimeter of square = 4 * p

= 20√2 cm

plzz mark me brainelist