Find the perimeter of a rectangle whose length and breadth are 45m and 70m respectively?
Perimeter=2(length+breadth)
2(45+70)=2*115=230
The area of a rectangular table is 5700sq.cm.If its breadth is 95cm,what is its length?
length=Area/Breadth
Length=5700/95=60
If the side of a square is 12cm,find its area?
Area=a*a
Area=12*12=144
If area of a square is 1024 sq.cm,find its side?
Side=Sqr root of Area
Side= 32
If the length and breadth of a rectangle is 12m and 9m find length of its diagonal.
Diagonal = √12²+9²=15
If diagonal of a square is 12cm,find its area
Area=d²/2=144/2=72
The side of a square is 8cm.What is the area of a square passing through its diagonal?
Area=s²*2=8²*2=128
The side of a square is 5cm.Find the percentage increase in area if side is doubled.
Area of the square=s²=25
When side is doubled:side=5*2=10,therefore area=s²=100
Percent increase in area=[(100-25)/25]*100=300%
The side of a square is 6cm.Find the percentage increase in area if side is trebled?
Area of the square with side 6cm=36
When side is trebled ,side=3*6=18cm
Area=324,Percentage increase in area=[(324-36)/36]*100=(288/36)*100=800%
What is the perimeter of a square whose area is twice the area of a square with perimeter 20m?
When area is increased 4 times,side is doubled.
Side of given square=20/4=5cm
Side of next square=5*2=10
Perimeter=4*10=40
A rectangular plot with length 12 m and breadth 8m has a pavement of breadth 2m outside it.Find area of the pavement?
(x+2a)(y+2a)-(xy)=(12+4)(8+4)-(12*8)=(16*12)-(12*8)
192-96=96
A rectangular plot with length 10m and breadth 8m has a pavement of breadth 2m inside it.Find the area of the pavement?
xy- (x-2a)(y-2a)=80-[(10-4)*(8-4)]=80-24=56
The ratio between length and breadth of a rectangle is 4:3.Area is 343sqcm.Find length.
Let length be 4x and breadth 3x.Area=7x*x=7x²=343 x²=49
X=7 Length=4*7=28
The cost of fencing around a rectangular playground at the rate of 10 per metre is Rs.4800.If the ratio between length and breadth is 5:3,find the breadth.
Perimeter=4800/10=480
Perimeter=2(5x+3x)=480
8x=240 x=30
Breadth=3*30=90
The area of a rectangle is 800sq.cm.Perimeter is 100cm.What is the length of its diagonal?
Area=lb=800,Perimeter=2(l+b)=100
l+b=50,(l+b)²=2500,l²+b²+2lb=2500,l²+b²+1600=2500
l²+b²=900,√l²+b²=30