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Area to be painted=Area of base + 2* area of sides+ area of back face=50*40+ 2*(40*25)+ (50*25)=2000+2000+1250=5250cm^2

Area of the shaded region= area of rectangle-area of semicircle =l*b - (pi*r^2)/2 =21*14 - (pi*7^2)/2 =294 - (22/7*49)/2 =294 - 22*7/2 =294 - 77 =217 cm^2 answerperimeter of shaded region = perimeter of rectangle- perimeter of semicircle =70 - 22 =48 cm

Sphere:r=2cmCube:a=44cmNumber of lead shots · Volume of lead shot=Volume of cuben · (4/3)πr^3=a^3n=a^3 (4/3)πr^3n=44·44·44 (4/3)·(22/7)·2·2·2By dividing and multiplyingn=2541Therefore 2541 lead shots can be made.

P(of red ball)= 1-(3/10+2/5)= 1-(3+4/10)= 1-7/10= 10-7/10P(of red ball)=3/10No of black balls=> 20/total no.of balls=2/5=>50=Total no.of ballsNo.of red balls=>3/10=No.of red balls/5015=No.of red ballsNo.of white balls=>3/10=No.of white balls/5015=No.of white balls

is been divided or something so first plus the 7 cm and 3cm

40cm is the best answer

2.3 is the right answer

40 cm is correct answer.

In this way ,answer is not coming

sorry galti se 'not' likha gaya

Whole angle is 360°so,x + 40° = 360°x = 360° - 40° = 320°

koyal vora thanks for giving the answer

In a sphere

diameter = 4.2cm

radius = 2.1 cm

In a cuboid

length = 6cm

breadth = 42 cm

height = 21cm

∵ (volume of sphere) x = volume of cuboid

4/3π r³ x = lbh4/3*22/7*2.1*2.1*2.1 x = 42*6*21388.08 x = 5292x = 5292/388.08x = 14Number of spheres = 14

BHAI NUMBER OF SPHERICAL LEAD SHOTS NIKLANA HAI

Smaller cubeSide = a = 2cmCapacity (Volume) = a³ = 2³ = 8cm³

Bigger cubeSide = a = 8cmCapacity = a³ = 8³ = 512 cm³

No: of cubes that can be made = 64 cubes

Thanks

The hemisphere is mounted on the cubical blockThe diameter of the hemisphere = the side of the cube= 7cm

TSA of the solid = TSA of cube - Area of base of hemisphere + CSA of hemisphere

⇒ TSA = 6×7² -π×(3.5)² + 2×π×(3.5)²

⇒ TSA = 6×7² + π×(3.5)²

⇒ TSA = 332. 465 cm²

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A door of breadth 1 metre and height 2 metre

∴area of the door = [length * breadth] =[1 m*2m] =2m^2

the length of the wall is 4.5 M and the height is 3.6

∴area of the wall = [length * breadth] = [4.5m*3.6m]=16.2 m^2

∴area to be painted = [area of the wall - area of the door ]

∴area to be painted= [16.2 m^2 - 2m^2 ] = 14.2m^2

the rate of whitewashing the wall is 20 rupees per metre square

= Rs 14.2m^2 *20 = Rs 284 ANS

volume of {1st +2nd+3rd} sphere= vol of big sphere4/3π{(1/2)^3+(15/20•r^3}=

let radius of third sphere x3 ball made by big sphere sovolume of {1st+2nd+3rd) sphere= vol of big sphere4/3π{(1/2)^3+(15/20)^3+r^3}=4/3π×(3/2)^31/8+27/64+r^3=27/8r^3=27/8-1/8-27/64 =27×8-8-27/64 =216-8-27/64=181/64r=(181/64)^1/3

Selling Price = Cost Price means no loss and no gain.=> Profit = Loss=> (100+25)/100 * 4000 - 4000 = 4000 - (100-x)/100 * 4000=> 1000 = 4000 - 40(100-x)=> 100 - x = 3000/40=> 100 - x = 75=> x = 100 - 75 => x = 25%

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s=d/t=874/16=54.625km/hr is the correct answer of the given question

Given,distance covered by the car = 874 km,time taken by the car to complete the travel = 16 hours,Hence,Speed of the car = 874 / 16, = 54.625 km / hour.

the volume of that rectangular box is 20*8*3.2 = 16*32 = 512cm³

now when casted in cubes the volume is 512cm³ so side "a" will be a³ = 512a=³√512 = 8cm.

SP = Rs. 375

if gain = 25%gain% = (SP-CP)/CP * 100⇒ 25 =(375-CP)/CP * 100⇒ 25/100 =(375-CP)/CP⇒ 0.25CP = 375 - CP⇒ 0.25CP + CP = 375⇒ CP = 375/1.25= Rs.300

if loss = 25%loss% = (CP-SP)/CP * 100⇒ 25 =(CP-375)/CP * 100⇒ 25/100 =(CP-375)/CP⇒ 0.25CP = CP - 375⇒ CP -0.25 CP = 375⇒ CP = 375/0.75= Rs.500

Total CP = 300+500 = 800Total SP = 375+375 = 750

loss = 800- 750 = Rs. 50loss% = loss/CP * 100 = 50/750 * 100 = 6.67%

thanks

but answer of second question

incomplete questions. .

incomplete questions. .

First place can be filled up in 5 ways.After filling first place,we are left with 4 flags.

∴∴The second place can be filled up in 4 ways.

The total number of signals which can be generated =5×4=20

the correct answer is 40

wrong answer

right answer sorry

Naina spend total= 8*18 +15*20 + 5*515 + 6*230= 144 + 300 + 2575 + 1380= 4399

Naina given = 500*9 = 4500

She got back = 4500-4399 = Rs 101

SP of table=Rs.625

Profit%=20%

CP=SPx100/100+P%

=625x100/100+20

=62500/120

=Rs.520.83

Answer=Rs.520.83

Therefore shopkeeper paid Rs.520.83 for the table

Let Marked Price = MPLet purchased price is SPSP = MP(1-20/100) = MP(1-1/5) = MP(4/5)

If discount is 25%SP = MP(1-25/100) = MP(1-1/4) = MP(3/4)

GivenMP(4/5) - MP(3/4) = 500MP(16-15)/20 = 500MP = 10000

Price at which sofa set is bought= MP(4/5) = 10000*4/5= 8000

Let x be weight25/4 % of x = 0.25kg(25x/4)×100 = 0.2525x/4 = 2525x = 25×4x = 4kg45% of 4kg = 45×4/100 = 180/100 = 1.8kg

thanks bhaiya

दूसरी संख्या 299 हैं

Total price= 500*15+300*20= 7500+6000= 13500now he sold it at380*15+380*2013300he got a lossof 200 rupees

cp of 15 tables =500×15=7500cp of 20 chairs =300×20=6000total cost =7500+6000=13500sp of chairs and tables =380×35=13300so...... loss ?=13500-13300=200loss =200

a) 140mmb)32 cmc) 1600md)2.5 kg

send again not able to understand

-3dx- 64 is the correct answer