alleryఒక 30 m చుట్టూ 20 m తోట కవర్లు 216 m²; దాని వెడల్పు?
A3 m
B1 m
C4 m
D2 m
Answer & Solution
Correct answer: D. 2 m
వెడల్పు x కోసం, (30 + 2x)(20 + 2x) - 600 = 216 ఇస్తుంది (x - 2)(x + 27) = 0, కాబట్టి x = 2 మీ.
Keep practising Mensuration
Browse all Mensuration questions for RPF Constable, or explore more Arithmetic topics.
Related questions
Mensuration: choose the measureA circular sector of radius 21 cm has perimeter 86 cm. Find its area; use π = 22/7.A rhombus has diagonals 16 cm and 30 cm. What are its area and perimeter?A trapezium has parallel sides 18 m and 30 m, with height 10 m. Paving costs ₹12 per m². TA full cylinder (r=6,h=8 cm) contains a solid cone of the same r,h. Pour its water into a A radius-7 cm cylinder of height 10 cm has a matching hemisphere on top. Area exposed exclA radius-6 cm sphere is melted into cones of radius 2 cm and height 3 cm, with no loss. HoA hemispherical dome has radius 7 cm. Its curved covering needs how much material? Use π =