Question
What will be the total surface area of a triangular
pyramid whose sides are all 2cm long?Solution
A = 2 cm The total surface area of the triangular pyramid = 4(√3/4 × a ×a) = 4 ×√3 /4 ×4 = 4√3cm²
If 8 times the eighth term of an Arithmetic Progression (AP) is equal to 12 times its twelfth term, then the 20th term of the AP will be
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The fourth term of an arithmetic progression is 6. Then the sum of first seven terms is:
A man wants to invest Rs. 60660 in bank accounts of his two sons whose ages are 12 years and 16 years in such a way that they will get equal amount at a...
Amish invested 2500 Rupees in each of these schemes, offering simple interest of 12% per annum. 16% P.A. and 15% PA. respectively. Find the total intere...
The sum of total surface area of two cubes is 1248-centimeter square. If the product of the length of their edges is 96 centimeter square. Find the diff...
If the angular diameter of the sun is 20, how far from the eye a coin of radius 3.3 cm be kept to hide the sun?
Mean of a grouped data calculated using direct method, assumed mean method or step deviation method:
The sum of 6 consecutive odd numbers is 156. What will be the product of first number and the last number?
The sum of three numbers is 226. If the ratio of the first to the second is 4:5 and that of second to the third is 7: 10 then the second number is?
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