Related Questions

The total surface area of a hemisphere of radius r is __
ক 4πr2
খ πr2
গ 2πr2
ঘ 3πr2
If the total surface are of a hemisphere be 36. sq. cm, then its radius is
ক 3√2 cm
খ 3√3 cm
গ √3 cm
ঘ 2√3 cm
Why are winters more severe in Southern Hemisphere than in the Northern Hemisphere?
ক Earth is tilted towards the Sun in the Northern Hemisphere
খ Northern Hemisphere receives more sunlight
গ Because of more iceberg activity in Southern Hemisphere
ঘ Southern Hemisphere is less inhabited
When it is January and winter in the Northern Hemisphere, it is ______and ________in the Southern Hemisphere.
ক January and summer
খ January and winter
গ July and winter
ঘ July and summer
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:
ক The earth is closer to the sun in January
খ The earth is farther from the sun in July
গ Over 80% of the Southern Hemisphere is covered with water
ঘ The sun's energy is less intense in the Southern Hemisphere
How many spherical balls of radius 1 cm can be made by melting a hemisphere of radius 6 cm?
ক 112
খ 108
গ 116
ঘ 104
একজন অ্যাথলেট পৃথিবীতে দীর্ঘ লাফ দিয়ে সর্বোচ্চ 4 m দূরত্ব যেতে পারেন। এই অ্যাথলেট চাঁদের পৃষ্ঠে দীর্ঘ লাফ দিয়ে সর্বোচ্চ কত দূর যেতে পারবেন ? [পৃথিবীর ভর ও ব্যাসার্ধ চাঁদের ভর ও ব্যাসার্ধের যথাক্রমে 81 গুণ ও 4 গুণ] (An athlete can cross a maximum distance 4 m by a long jump on earth surface. What is the maximum distance the athlete can cross by a long jump on moon's surface? [The mass and radius of earth are 81 times and 4 times of moon's mass and radius, respectively.])
ক 0.79m
খ 9 m
গ 20.25 m
ঘ 16 m
ঙ 32.35 m
The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?
ক 32
খ 40
গ 60
ঘ 72
The ratio of the area of area of a circle to the radius of the radius of the circle is--
ক π
খ 2π
গ π2
ঘ none of these
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
ক 16 to 9
খ 9 to 16
গ 1 to 4
ঘ 4 to 3

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