MTS 21 25-07-2022 Shift 1


Question 1

The length, the breadth, and the height of a cuboidal room are given as 80 m, 70m, and 80 m, respectively. What will be
the total cost of painting the four walls of this room, at the rate of 50 paise per square metre?

एक घनाभाकार कमरे की लंबाई, चौड़ाई और ऊंचाई क्रमशः 80m, 70m और 80m है। इस कमरे की चार दीवारों
को ₹ 0.50/m2 (50 पैसे प्रति वर्ग मीटर) दर पेंट कराने की कुल लागत कितनी होगी?


Options

A

B

C

D


Solution:

Correct Answer:

C


Area of cuboid's four walls = 2h(l+b)

Area = 2 ×\times 80(80 + 70) = 24000

Cost of painting the four walls = 12\frac12 ×\times 24000 = ₹12000

घनाभ की चार दीवारों का क्षेत्रफल  = 2h(l+b)

क्षेत्रफल = 2 ×\times 80(80 + 70) = 24000

चार दीवारों के पैंट करने की कुल लागत  = 12\frac12 ×\times 24000 = ₹12000

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