Solution: To find which box requires the lesser amount of material to make we have to calculate the total surface area of both these boxes.... View Article
Solution Given: Altitude BE and CF are equal To prove: ΔABC is an isosceles Δ In ΔBEC and ΔCEB ∠E=∠F —————-[each 90°] BC=BC —————–[common]... View Article
Given The diameter of the moon is approximately one-fourth of the diameter of the earth. Find out The ratio of the surface areas of earth and... View Article