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Thursday 16 February 2017
Wednesday 15 February 2017
CBSE Class 9- Maths - Surface Areas and Volumes - NCERT EXERCISE 13.8 (#ncertsolutions) (#cbsenotes)
Surface Areas and Volumes - Spheres
Class 9 - Maths - NCERT EXERCISE 13.8
Q1: Find the volume of a sphere whose radius is
(i) 7 cm
(ii) 0.63 m
Answer:
(i) Given, r = 7 cm
Volume of sphere = (4/3)πr³
= (4/3) × (22/7) × (7)³
= 1437⅓ cm³
(ii) Given, r = 0.63 m
Volume of sphere = (4/3)πr³
= (4/3) × (22/7) × (0.63)³
= 1.05 m³ (approx)
Tuesday 14 February 2017
CBSE Class 7 - Geography - Human Environment Interaction - Tropical and Sub-Tropical Region (Assignment) (#cbsenotes)
Human Environment Interaction -
Tropical and Sub-Tropical Region
Class 7 - Geography - Assignment
Amazon Basin image credits: wikpedia |
Q1: Define the following terms:
(a) Tributaries
(b) River Mouth
(c) Equatorial Region
(d) Population Density
(e) Cash crops
Q2: Name the countries of the Amazon basin through which equator passes?
Q3: What is the main occupation of the people of the Amazon rain forest?
Q4: Name two types of houses in which Amazon families live.
Sunday 12 February 2017
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