Three cubes of each side 4 cm are joined end to end. Find the surface area of the resulting cuboid. Side of each cube (a) = 4 cm We need to find the surface area of the resulting cuboid Dimensions of the resulting cuboid, Length (l) = 3a Breadth (b) = a Height (h) = a Surface area of the cuboid, `=2(lb + bh + hl)` `=2[(3a) a +(a)(a) +a(3a)]` `=2(7a^2)` `=14a^2` `= 14 xx 4^2` `=224 cm^2` Surface area of the cuboid is `224 cm^2`. Concept: Surface Area of a Cuboid Is there an error in this question or solution? Recommended textbooks for you Holt Mcdougal Larson Pre-algebra: Student Edition... Elementary Geometry For College Students, 7e Author:Alexander, Daniel C.; Koeberlein, Geralyn M. Elementary Geometry for College Students Author:Daniel C. Alexander, Geralyn M. Koeberlein Publisher:Cengage Learning Algebra & Trigonometry with Analytic Geometry Linear Algebra: A Modern Introduction Publisher:Cengage Learning Holt Mcdougal Larson Pre-algebra: Student Edition... ISBN:9780547587776 Author:HOLT MCDOUGAL Publisher:HOLT MCDOUGAL Elementary Geometry For College Students, 7e ISBN:9781337614085 Author:Alexander, Daniel C.; Koeberlein, Geralyn M. Publisher:Cengage, Elementary Geometry for College Students ISBN:9781285195698 Author:Daniel C. Alexander, Geralyn M. Koeberlein Publisher:Cengage Learning Algebra & Trigonometry with Analytic Geometry ISBN:9781133382119 Author:Swokowski Publisher:Cengage Linear Algebra: A Modern Introduction ISBN:9781285463247 Author:David Poole Publisher:Cengage Learning The Teachers Recruitment Board, Tripura, is expected to release the notification for Tripura TET (Teacher's Eligibility Test) very soon. The Tripura TET Exam includes two papers. Paper-I is for the aspirant intending to be a teacher for Class-I to V and Paper-II for Class-VI to VIII. As Tripura TET does not have any age limit, it might be a golden opportunity for many government job aspirants. The aspirants must go through the Tripura TET Eligibility Criteria to match their eligibility as per the need of the exam. |