Question

ABCD is a rectangle AB=3cm BC=5.5cm : perimeter of rectangle =2 ​

Answer 1

Answer:

2(3+5.5)

Step-by-step explanation:

perimeter of rectangle= 2(l+b)

= 2(3+5.5)

so the answer = 2(3+5.5)

Answer 2

Perimeter of a rectangle=2(l+b)

=2(3+5.5)cm

=2(8.5)cm

=17.0 cm

=17cm

______________________

$\large\underline\frak { \pmb {More \ formulas}}$

✯Perimeter of square:4×side

✯Perimeter of rectangle:2(l+b)

_______________________

✯Area of square:l^2

✯Area of rectangle:l×b

_______________________

✯Circumference of a circle:2 πr

✯Area of a circle:πr^2

_______________________

✯Area of a triangle:1/2 bh

✯Area of trapezoid:1/2(b1+b2)h

________________________

✯Surface area of cube:SA=6s^2

✯Surface area of cylinder:SA=2πrh+2πr^2

✯Surface area of cone:SA=πrl

✯Surface area of sphere:SA=4πr^2

_____________________

✯Volume of cube:V=s^3

✯Volume of cylinder:V=πr^2 h

✯Volume of cone:V=1/3πr^2 h

✯Volume of sphere:V=4/3πr^3