3 / r

For a sphere, surface area is S= 4*Pi*R*R, where R is the radius of the sphere and Pi is 3.1415… The volume of a sphere is V= 4*Pi*R*R*R/3. So for a sphere, the ratio of surface area to volume is given by: S/V = 3/R.

Volume of sphere=34​π(2r)3=332​πr3. Was this answer helpful?

Total surface area of a solid hemisphere with radius r is, S=2πr2+πr2=3πr2.

The area of a circle of radius r is πr2 and thus if the hemisphere is meant to include the base then the surface area is 2πr2+πr2=3πr2.

Therefore, the volume of a hemisphere formula is as follows: V = V(sphere)/2 , V = 2/3 * π * r³ .

And the formula for the surface area of a sphere of radius R is 4*Pi*R2.

D = 2 r. Surface Area of a Sphere. A = 4 π r2. Volume of a Sphere. V = (4 ⁄ 3) π r3.

Both these “annuli” have the same area 2πrΔz. As this is true for any such plate it follows that the total area of the sphere Sr is the same as the total area of Z, namely 4πr2.

Spherical shell: Outer surface area spherical shell=4πR2. Volume of material used for spherical shell=43π(R3−r3)

So, in general, low reps with heavy weight tends to increase muscle mass, while high reps with light weight increases muscle endurance. Lifting heavy weights builds muscle, but constantly upping the weight exhausts the body.

There is no recommended upper limit on the amount of cardio exercise you should do on a daily or weekly basis. However, if you push yourself hard with every workout, then skipping a day or two each week to rest may help you avoid injury and burnout.

Low-intensity cardio You don’t have to exercise at a high intensity to lose weight. If you’re a beginner or have physical limitations, low-intensity cardio can also help you burn calories and drop pounds. These workouts include jogging, bicycling, power walking, swimming, and aerobics.

According to one study, performing HIIT helped people burn up to 30% more calories than other types of exercise, such as cycling or jogging, in the same amount of time ( 48 ). For an easy way to get started with HIIT, try alternating between walking and jogging or sprinting for 30 seconds at a time.

For best results, try to fit in at least 20–40 minutes of cardio daily — or about 150–300 minutes per week ( 3 ).

Climbing stairs is one of the best exercises when it comes to pure FAT BURN, strengthening the lower body, toning the butt, thighs, calves, losing inches from those love handles and belly and building great abs. Along with these benefits is the immense good it does for your lungs and cardio vascular system.

Climbing and descending stairs is particularly difficult for people with knee arthritis. Arthritis causes degeneration of the cartilage that cushions the knee joint. Without protective cushioning, the act of climbing stairs becomes uncomfortable.

“Men who climbed 20 to 34 floors of stairs per week — that’s about 3 to 5 floors a day — had a 29 percent reduction of their risk of stroke,” Lee says.

Losing weight can seem like a daunting task, but it’s possible to work exercise into your daily routine and lose a pound per week. Fitness experts said about 3,500 calories need to be burned to shed a pound. A 150-pound person walking up and down stairs for 10 minutes can burn 91 calories.

It increases muscle strength This type of exercise can increase the strength of the leg, thigh and hip muscles while also toning the abdominal muscles. Climbing stairs can also help build muscle mass in the lower body.

Fitness professionals’ encouragement of daily stair climbing as part of an exercise routine may help motivate participants to increase their daily walking and stair climbing. In older adults, regular stair climbing might be a promising way to increase PA and maintain their independence during their daily lives.

There are 274 ways to climb the stairs.

Instructions

• Pay careful attention to your steps.
• Avoid taking the stairs in your stocking feet, loose shoes or floppy slippers.
• Always use the handrails.
• Don’t rush.
• Avoid distractions.
• Pay attention to the signs close to the stairs, the clutter, and the overall surface of the stairs.
• Make use of good lighting.