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Answers
Step-by-step explanation:
Principal amount (P) = Rs 12500
Time period (T) = 3 years
Rate of interest (R) = 15% p.a.
Interest =
100
P×R×T
=
100
12500×15×3
= Rs 5625
Rest of the amount lent = Rs 15000−Rs 12500=Rs 2500
Rate of interest = 18% p.a.
Time period = 3 years
Interest =
100
P×R×T
=
100
2500×18×3
= Rs 1350
Total interest earned = Rs 5625+Rs 1350=Rs 6975
Answer:
A farmer grew wheat on a farm of area 350 acres. He stored them in grain
silos composed of a cylinder and a cone
(a) The volume of the conical portion in terms of p is
(i) 36p m3 (ii) 12p m3 (iii) 16p m3 (iv) 4p m3
(b) The volume of the cylindrical portion in terms of p is
(i) 21p m3 (ii) 42p m3 (iii) 63p m3 (iv) 147p m3
(c) The total surface area of the grain silo in terms of p is
(i) 45p m2 (ii) 60p m2 (iii) 63p m2 (iv) 66p m2
(d) If the conical portion of the grain silo is replaced by a hemispherical
portion, then the volume of the silo in terms of p will be
(i) 69p m3 (ii) 81p m3 (iii) 39p m3 (iv) 60p m3
(e) Surface area of a cubical paper weight having diagonal 10 3 is
(i) 60 cm2 (ii) 600 cm2 (iii) 100 cm2 (iv) 360 cm2