MathematicsFind the volume of a cone of radius 3.5cm and vertical height 12cm [Take π… Find the volume of a cone of radius 3.5cm and vertical height 12cm [Take π = 22/7] A. 3.4cm^{2} B. 15.5cm^{2} C. 21.0cm^{2} D. 42.0cm^{2} E. 154.0cm^{2}Correct Answer: Option EExplanationFacebookTwitterRedditPinterestEmailLinkedInWhatsApp
In the diagram, (Phat{Q}S = 65^o, Rhat{P}S = 40^2hspace{1mm}andhspace{1mm}Qhat{S}R=20^ohspace{1mm}Phat{S}Q)
(frac{0.0001432}{1940000}) = k x 10n where 1 (leq) k (frac{0.0001432}{1940000}) = k x 10n where 1 (leq) k A. 7.381 qnd -11 B. 2.34 and 10 C. 3.871 and 2 D. 7.831 and -11 Correct Answer: Option A Explanation (frac{0.0001432}{1940000}) = k x 10n where 1 (leq) k (leq) 10 and n is a whole number. Using four figure tables, the eqn. gives 7.38 x 10-11 k = 7.381, n = -11 `, props: [‘comment’], data() { return {} }, methods: {} }) {{ reply.posted_by.display_name }}: {{ reply.created_at }} `, props: [‘comment’, ‘reply’, ‘rate_selection’, ‘token’], data() { return {} }, methods: {} })
In the diagram, QTR is a straight line and In the diagram, QTR is a straight line and o. find the sin of A. (frac{8}{15}) B. (frac{2}{3}) C. (frac{3}{4}) D. (frac{15}{16}) Correct Answer: Option C Explanation (frac{10}{sin 30^o} = frac{15}{sin x} = frac{10}{0.5} = frac{15}{sin x}) (frac{15}{20} = sin x) sin x = (frac{15}{20} = frac{3}{4}) N.B x = `, props: [‘comment’], data() { return {} }, methods: {} }) {{ reply.posted_by.display_name }}: {{ reply.created_at }} `, props: [‘comment’, ‘reply’, ‘rate_selection’, ‘token’], data() { return {} }, methods: {} }) {{ comment.posted_by.display_name }}{{ comment.created_at }}