1.

Solve it plzz plz and by formula​

Answer»

Answer:

DIAGONAL = 113 cm

Step-by-step-explanation:

given that,

in a rectengle,

sides = 112 cm and 15 cm

let ABCD is a rectangle

AB = 112 cm

BC = 15 cm

so,

length = 112 cm

breadth = 15 cm

here,

AC is diagonal

which divides the rectangle in two congruent(equal) TRIANGLE

in Δ ABC

base = AB = 112 cm

height = BC = 15 cm

hypotenuse = diagonal = AC

and we KNOW that

in a rectangle

all angles are right angles(90°)

so,

by the pythagorus theorem

AC² = AB² + BC²

AC² = 112² + 15²

AC² = 12544 + 225

AC = √12769

AC = 113 cm

so,

hypotenuse = diagonal of rectangle

so,

length of diagonal = 113 cm

hope it helps


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