Question

find the area and perimeter of rectangle whose length and breadth and height are 18cm, and 15cm​

Answer 1

Step-by-step explanation:

area of rectangle =l×b

=18×15

=270

perimeter of rectangle =2(l+b)

= 2×33

=66

Answer 2

Answer:

For Example:

L= 15 [L = length, B=breadth, H = diagonal ]

H=17

L^2 + B^2= H^2

15^2 + B^2 = 17^2

B^2 = 289-225 = 64

B = 8

area of rectangle = L×B = 15×8 = 120

perimeter of rectangle = 2 (L+B) = 2 (15+8)

= 2 (23)

= 46

instead of $17$

try it with $18$

Step-by-step explanation:

l^2 + b^2 = h^2

15^2 + b^2 = 18

b^2 = 324 - 225 = 99

$\sqrt{} 99$