Mensuration MCQs for Competitive Examination Solve the following problems. Q. 41Find the total surface area (in cm²) of a cube of side 7.5 cm. (A)364.5(B) 446(C) 337.5(D) 684 Show Answer/Hide Answer Answer: (C) 337.5Explanation: Q. 42The area and the length of one of the diagonals of a rhombus is 84 cm² and 7 cm respectively. Find the length of its other diagonal (in cm). (A) 12 (B) 24(C) 48 (D) 36 Show Answer/Hide Answer Answer: (B) 24Explanation: Q. 43Find the perimeter (in cm) of a semicircle of radius 28 cm. (A) 288 (B) 144(C) 121 (D) 242 Show Answer/Hide Answer Answer: (B) 144Explanation: Perimeter of a semicircle = (πr+2r) Q. 44Find the curved surface area (in cm²) of a hemisphere of diameter 28 cm. (A) 1152 (B) 1024(C) 956 (D) 1232 Show Answer/Hide Answer Answer: (D) 1232Explanation: Q. 45The surface area of a sphere is 5544 cm². Find its diameter (in cm). (A) 42 (B) 21(C) 84 (D) 63 Show Answer/Hide Answer Answer: (A) 42Explanation: Q. 46The area of a semicircle is 1925 cm². Calculate its perimeter (in cm). (A) 360 (B) 80(C) 160 (D) 180 Show Answer/Hide Answer Answer: (D) 180Explanation: Q. 47The perimeter and the breadth of a rectangle are 44 cm and 10 cm respectively. Find its area (in cm²) (A) 60 (B) 240(C) 120 (D) 180 Show Answer/Hide Answer Answer: (C) 120Explanation: Q. 48Find the volume (in cm³) of a right circular cylinder of diameter 21 cm and height 10 cm. (A) 3118 (B) 3275(C) 3621 (D) 3465 Show Answer/Hide Answer Answer: (D) 3465Explanation: Q. 49The area of a circular cricket ground is 24.64 hectares. Find the cost of making rope boundary at the rate of Rs. 5.40 per metre. (A) Rs. 9,600(B) Rs. 9,504(C) Rs. 9,802(D) Rs. 9,876 Show Answer/Hide Answer Answer: (B) Rs. 9,504Explanation: (1 hectare = 10000 sq m) Q. 50The curved surface area and the slant height of a right circular cone are 99 cm² and 9 cm respectively. Find its diameter (in cm). (A) 3.5(B) 7(C) 14(D) 10.5 Show Answer/Hide Answer Answer: (B) 7Explanation: Curved Surface Area of a right circular cone = πrl Q. 51What must be the length (in cm) of the diagonal of a rectangle if its area and breadth are 120 cm² and 8 cm respectively? (A) 34(B) 17(C) 15(D) 30 Show Answer/Hide Answer Answer: (B) 17Explanation: Q. 52Find the volume (in cm^{3}) of a hemisphere of diameter 21 cm (A) 235.5(B) 2425.5(C) 2040(D) 1860 Show Answer/Hide Answer Answer: (B) 2425.5Explanation; Q. 53In a triangle ABC, PQ is a straight line parallel to AC, such that Area ABC : Area PBQ = 3 : 1 Then CB : CQ is equal to (A) (√3/2) (√3 + 1)(B) (√3 – 2)/2(C) (√3/2) (√3 – 1)(D) √3/2 Show Answer/Hide Answer Answer: (A) (√3/2) (√3 + 1)Explanation: Q. 54The perimeter of a rhombus is 240 m and the distance between any two parallel sides is 20 m. The area of the rhombus in sq m is (A) 600(B) 1200(C) 2400(D) 4800 Show Answer/Hide Answer Answer: (B) 1200Explanation: Area of rhombus = (side)(height) = 60*20 = 1200 Q. 55Find the total surface area (in cm²) of a right circular cylinder of diameter 42 cm and height 14 cm. (A) 4488(B) 4250(C) 4010(D) 4620 Show Answer/Hide Answer Answer: (D) 4620Explanation: Q. 56What is the curved surface area (in cm²) of a hemisphere of diameter 42 cm? (A) 2332(B) 1778(C) 1556(D) 2772 Show Answer/Hide Answer Answer: (D) 2772Explanation: Q. 57The volume of a hemisphere is 19404 cm³. Find its diameter (in cm). (A) 42(B) 21(C) 84(D) 63 Show Answer/Hide Answer Answer: (A) 42Explanation: Q. 58The area of a square is 40.5 cm². Find the length of its diagonal (in cm). (A) 9(B) 4.5(C) 18(D) 13.5 Show Answer/Hide Answer Answer: (A) 9Explanation: Q. 59 The total surface area of a hemisphere is 462 cm². Find its diameter (in cm) (A) 7(B) 28(C) 21(D) 14 Show Answer/Hide Answer Answer: (D) 14Explanation: Q. 60The total surface area of a cube is 181.5 cm². Find its side (in cm) (A) 6.5(B) 4.5(C) 7.5(D) 5.5 Show Answer/Hide Answer Answer: (D) 5.5Explanation: « 1 2 3 4 5 » Share on facebook Share on twitter Share on linkedin Share on pinterest Share on reddit Share on whatsapp Share on email Share on telegram Mensuration MCQs (page 1) Mensuration MCQs (page 2) Mensuration MCQs (page 3) Mensuration MCQs (page 4) Mensuration MCQs (page 5)