Question

find the area of a rectangle whose length is 15 cm and diagonal is 17 cm​

Answer 1

Answer:

Given

L=15 (Length = L;B = Breadth;H = diagonal)

H=17 cm

L sq.+B sq.+h sq.

⇒(15) sq. +B sq.

=(17) sq.

⇒225+B sq.

=289

⇒B sq.

=289−225

⇒B sq.

=64

⇒B=64

B=8 cm.

Breadth =8 cm.

Area of rectangle =L×B=15×8=120m sq.

Perimeter of rectangle =2(L+B)

=2(15+8)

=2(23)

=46 cm.

Answer 2

Step-by-step explanation:

Area of rectangle=120cmsq.